Methacrylic Acid

H302: Harmful if swallowed [Warning Acute toxicity, oral]

H312: Harmful in contact with skin [Warning Acute toxicity, dermal]

H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

P260, P264, P270, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P362+P364, P363, P405, and P501 (click each P-code to see the statement)

This chemical does not meet GHS hazard criteria for < 0.1% (1 of 3874) of reports.

H302 (99%): Harmful if swallowed [Warning Acute toxicity, oral]

H311 (75.8%): Toxic in contact with skin [Danger Acute toxicity, dermal]

H312 (25.5%): Harmful in contact with skin [Warning Acute toxicity, dermal]

H314 (> 99.9%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

H318 (72.4%): Causes serious eye damage [Danger Serious eye damage/eye irritation]

H332 (75.4%): Harmful if inhaled [Warning Acute toxicity, inhalation]

H335 (76.6%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

P260, P261, P262, P264, P264+P265, P270, P271, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P319, P321, P330, P361+P364, P362+P364, P363, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 3874 reports by companies from 64 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Reported as not meeting GHS hazard criteria per 1 of 3874 reports by companies.

There are 63 notifications provided by 3873 of 3874 reports by companies with hazard statement code(s).

Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

H227: Combustible liquid [Warning Flammable liquids]

H304: May be fatal if swallowed and enters airways [Danger Aspiration hazard]

H311: Toxic in contact with skin [Danger Acute toxicity, dermal]

H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]

H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure]

H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]

H402: Harmful to aquatic life [Hazardous to the aquatic environment, acute hazard]

P210, P260, P262, P264, P264+P265, P270, P273, P280, P301+P316, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P308+P316, P316, P317, P319, P321, P331, P361+P364, P363, P370+P378, P403, P405, and P501 (click each P-code to see the statement)

H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

H373: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]

P210, P260, P261, P262, P264, P264+P265, P270, P271, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P319, P321, P330, P361+P364, P363, P370+P378, P403, P403+P233, P405, and P501 (click each P-code to see the statement)

P260, P262, P264, P270, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P330, P361+P364, P363, P405, and P501 (click each P-code to see the statement)

Fresh air, rest. Half-upright position. Refer for medical attention.

Rinse skin with plenty of water or shower for at least 15 minutes. Refer immediately for medical attention . Wear protective gloves when administering first aid.

Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer immediately for medical attention.

Rinse mouth. Give nothing to drink. Do NOT induce vomiting. Refer for medical attention .

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.

INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.

INGESTION: DO NOT INDUCE VOMITING. Corrosive chemicals will destroy the membranes of the mouth, throat, and esophagus and, in addition, have a high risk of being aspirated into the victim's lungs during vomiting which increases the medical problems. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. IMMEDIATELY transport the victim to a hospital. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. Transport the victim IMMEDIATELY to a hospital. (NTP, 1992)

Excerpt from NIOSH Pocket Guide for Methacrylic acid:

Eye: IRRIGATE IMMEDIATELY - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.

Skin: WATER FLUSH IMMEDIATELY - If this chemical contacts the skin, immediately flush the contaminated skin with water. If this chemical penetrates the clothing, immediately remove the clothing and flush the skin with water. Get medical attention promptly.

Breathing: RESPIRATORY SUPPORT - If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. If breathing has stopped, perform artificial respiration. Keep the affected person warm and at rest. Get medical attention as soon as possible.

Swallow: MEDICAL ATTENTION IMMEDIATELY - If this chemical has been swallowed, get medical attention immediately. (NIOSH, 2024)

General First Aid:

· Call 911 or emergency medical service.

· Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.

· Move victim to fresh air if it can be done safely.

· Administer oxygen if breathing is difficult.

· If victim is not breathing:

-- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.

-- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).

-- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.

· Remove and isolate contaminated clothing and shoes.

· For minor skin contact, avoid spreading material on unaffected skin.

· In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.

· For severe burns, immediate medical attention is required.

· Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed.

· Keep victim calm and warm.

· Keep victim under observation.

· For further assistance, contact your local Poison Control Center.

· Note: Basic Life Support (BLS) and Advanced Life Support (ALS) should be done by trained professionals.

Specific First Aid:

· For corrosives, in case of contact, immediately flush skin or eyes with running water for at least 30 minutes. Additional flushing may be required.

· Removal of solidified molten material from skin requires medical assistance.

In Canada, an Emergency Response Assistance Plan (ERAP) may be required for this product. Please consult the shipping paper and/or the "ERAP" section.

(General first aid procedures)

Eye: Irrigate immediately - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.

Skin: Water flush immediately - If this chemical contacts the skin, immediately flush the contaminated skin with water. If this chemical penetrates the clothing, immediately remove the clothing and flush the skin with water. Get medical attention promptly.

Breathing: Respiratory support

Swallow: Medical attention immediately - If this chemical has been swallowed, get medical attention immediately.

Excerpt from ERG Guide 153 [Substances - Toxic and/or Corrosive (Combustible); polymerization hazard]:

SMALL FIRE: Dry chemical, CO2 or water spray.

LARGE FIRE: Dry chemical, CO2, alcohol-resistant foam or water spray. If it can be done safely, move undamaged containers away from the area around the fire. Dike runoff from fire control for later disposal.

FIRE INVOLVING TANKS, RAIL TANK CARS OR HIGHWAY TANKS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks in direct contact with flames. (ERG, 2024)

Use alcohol-resistant foam, powder, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.

Use dry chemical, carbon dioxide, or alcohol foam extinguishers. Vapors are heavier than air and will collect in low areas. Vapors may travel long distances to ignition sources and flashback. Vapors in confined area may explode in fire. Storage containers and parts of containers may rocket great distances, in many directions. If materials or contaminated runoff enters waterways, notify downstream users of potentially contaminated waters. Notify local health and fire officials and pollution control agencies. From a secure, explosion-proof location, use water spray to cool exposed containers. If cooling streams are ineffective (venting sound increases in volume and pitch, tank discolors, or shows any signs of deforming), withdraw immediately to a secure position. If employees are expected to fight fires, they must be trained and equipped.

Use water spray, dry chemical, "alcohol resistant" foam, or carbon dioxide. Use water spray to keep fire-exposed containers cool. Fight fire from protected location or maximum possible distance. /Methacrylic acid, inhibited/

Alcohol foam.

If material on fire or involved in fire: Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use "alcohol" foam, dry chemical or carbon dioxide. Use water spray to knock-down vapors. /Methacrylic acid, glacial (Corrosive liquid, acidic, organic, NOS); Methacrylic acid, glacial (Corrosive liquids, NOS)/

For more Fire Fighting Procedures (Complete) data for METHACRYLIC ACID (6 total), please visit the HSDB record page.

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· Keep unauthorized personnel away.

· Stay upwind, uphill and/or upstream.

· Ventilate closed spaces before entering, but only if properly trained and equipped.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

· Do not touch damaged containers or spilled material unless wearing appropriate protective clothing.

· Stop leak if you can do it without risk.

· Prevent entry into waterways, sewers, basements or confined areas.

· Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers.

· DO NOT GET WATER INSIDE CONTAINERS.

Excerpt from ERG Guide 153 [Substances - Toxic and/or Corrosive (Combustible); polymerization hazard]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.

SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.

FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)

Immediate precautionary measure

· Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.

· For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.

· For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind direction, as necessary.

· If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.

Personal protection: complete protective clothing including self-contained breathing apparatus. Collect leaking and spilled liquid in sealable plastic containers as far as possible. Cautiously neutralize remainder with aqueous sodium carbonate or lime. Then wash away with plenty of water. Do NOT absorb in saw-dust or other combustible absorbents. Do NOT let this chemical enter the environment.

Evacuate and restrict persons not wearing protective equipment from area of spill or leak until cleanup is complete. Remove all ignition sources. Establish forced ventilation to keep levels below explosive limit. Absorb liquids in vermiculite, dry sand, earth, or a similar non-organic materials and deposit in sealed containers. Using caution, neutralize remainder with aqueous sodium carbonate or lime. Then wash away with plenty of water. Keep this chemical out of a confined space, such as a sewer, because of the possibility of an explosion, unless the sewer is designed to prevent the build-up of explosive concentrations. It may be necessary to contain and dispose of this chemical as a hazardous waste. If material or contaminated runoff enters waterways, notify downstream users of potentially contaminated waters. Contact your Department of Environmental Protection or your regional office of the federal EPA for specific recommendations. If employees are required to clean-up spills, they must be properly trained and equipped.

Use water spray to cool and disperse vapors, protect personnel, and dilute spill to form nonflammable mixtures. Control runoff and isolate discharged material for proper disposal. /Methacrylic acid, inhibited/

Environmental considerations: Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Neutralize with agricultural lime (CaO), crushed limestone (CaCO3) or sodium bicarbonate (NaHCO3). Absorb bulk liquid with fly ash or cement powder. /SRP: If time permits, pits, ponds, lagoons, soak holes, or holding areas should be sealed with an impermeable flexible membrane liner./ /Methacrylic acid, glacial (Corrosive liquid, acidic, organic, NOS); Methacrylic acid, glacial (Corrosive liquids, NOS)/

Environmental considerations: Water spill: Use natural barriers or oil spill control booms to limit spill travel. Neutralize with agricultural lime (CaO), crushed limestone (CaCO3), or sodium bicarbonate (NaHCO3). Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates. /Methacrylic acid, glacial (Corrosive liquid, acidic, organic, NOS); Methacrylic acid, glacial (Corrosive liquids, NOS)/

For more Cleanup Methods (Complete) data for METHACRYLIC ACID (8 total), please visit the HSDB record page.

SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.

Incineration.

Wear protective gloves and clothing to prevent any reasonable probability of skin contact. Safety equipment suppliers/manufacturers can provide recommendations on the most protective glove/clothing material for your operation. All protective clothing (suits, gloves, footwear, headgear) should be clean, available each day, and put on before work. Contact lenses should not be worn when working with this chemical. Wear splash-proof chemical goggles and face shield unless full facepiece respiratory protection is worn. Employees should wash immediately with soap when skin is wet or contaminated. Provide emergency showers and eyewash.

If material not on fire and not involved in fire: Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Use water spray to knock-down vapors. Neutralize spilled material with crushed limestone, soda ash, or lime. /Methacrylic acid, glacial (Corrosive liquid, acidic, organic, NOS); Methacrylic acid, glacial (Corrosive liquids, NOS)/

Personnel protection: Avoid breathing vapors. Keep upwind. Avoid bodily contact with the material. ... Do not handle broken packages unless wearing appropriate personal protective equipment. Wash away any material which may have contacted the body with copious amounts of water or soap and water. If contact with the material anticipated, wear appropriate chemical protective clothing. Approach fire with caution. /Methacrylic acid, glacial (Corrosive liquid, acidic, organic, NOS); Methacrylic acid, glacial (Corrosive liquids, NOS)/

If material not on fire and not involved in fire: Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. /Methacrylic acid, stabilized/

For more Preventive Measures (Complete) data for METHACRYLIC ACID (12 total), please visit the HSDB record page.

Excerpt from ERG Guide 153 [Substances - Toxic and/or Corrosive (Combustible); polymerization hazard]:

ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2024)

Separated from strong oxidants and food and feedstuffs. Cool. Keep in the dark. Keep in a well-ventilated room. Store only if stabilized. Store only in original container.

Prior to working with this chemical you should be trained on its proper handling and storage. Before entering confined space where this chemical may be present, check to make sure that an explosive concentration does not exist. Store in tightly closed containers in a cool, well ventilated area away from oxidizers (such as perchlorates, peroxides, permanganates, chlorates and nitrates). Methacrylic acid should be stored at temperatures below 15 degrees C. Sources of ignition such as smoking and open flames are prohibited where Methacrylic acid is handled, used, or stored. Wherever Methacrylic acid is used, handled, manufactured, or stored, use explosion-proof electrical equipment and fittings.

Separate from oxidizing materials, peroxides, or other initiators. Store in cool, dry, well-ventilated location. /Methacrylic acid, inhibited/

Keep away from heat.

Temp during storage must be kept low to minimize formation of peroxides and other oxidation products. ... Storage temp below 30 °C are recommended for the polyfunctional methacrylates. ... The methacrylate monomers should not be stored for longer than one year. Shorter storage times are recommended for the aminomethacrylates, ie, three months, and the polyfunctional methacrylates, ie, six months. Many of these cmpd are sensitive to UV light and should, therefore, be stored in the dark. The methacrylic esters may be stored in mild steel, stainless steel, or aluminum. /Methacrylic acid & derivatives/

For more Storage Conditions (Complete) data for METHACRYLIC ACID (6 total), please visit the HSDB record page.

· Wear positive pressure self-contained breathing apparatus (SCBA).

· Wear chemical protective clothing that is specifically recommended by the manufacturer when there is NO RISK OF FIRE.

· Structural firefighters' protective clothing provides thermal protection but only limited chemical protection.

50.0 [ppm]

AEGL 1: Notable discomfort, irritation, or certain asymptomatic non-sensory effects. However, the effects are not disabling and are transient and reversible upon cessation of exposure (Unit: ppm)

AEGL 2: Irreversible or other serious, long-lasting adverse health effects or an impaired ability to escape (Unit: ppm)

AEGL 3: Life-threatening health effects or death (Unit: ppm)

AEGLs Status: Interim

6.7 [ppm]

61 [ppm]

220 [ppm]

20 ppm (70 mg/m³)

TWA 20 ppm (70 mg/m3) [skin]

none See Appendix G

See: IDLH INDEX

20.0 [ppm]

8 hr Time Weighted Avg (TWA): 20 ppm.

Excursion Limit Recommendation: Excursions in worker exposure levels may exceed three times the TLV-TWA for no more than a total of 30 min during a work day, and under no circumstances should they exceed five times the TLV-TWA, provided that the TLV-TWA is not exceeded.

20 ppm as TWA.

20 ppm [1992]

180 mg/m

Small Fire

· Dry chemical, CO2 or water spray.

Large Fire

· Dry chemical, CO2, alcohol-resistant foam or water spray.

· If it can be done safely, move undamaged containers away from the area around the fire.

· Dike runoff from fire control for later disposal.

Fire Involving Tanks, Rail Tank Cars or Highway Tanks

· Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles.

· Do not get water inside containers.

· Cool containers with flooding quantities of water until well after fire is out.

· Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank.

· ALWAYS stay away from tanks in direct contact with flames.

Maximum permissible concn is 0.44 mg/cu m (USSR).

Australia: 20 ppm (1990); United Kingdom: 20 ppm, 10 min STEL 40 ppm (1991).

A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20 °C.

The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation of the vapour may cause lung oedema.

Excerpt from NIOSH Pocket Guide for Methacrylic acid:

Skin: PREVENT SKIN CONTACT - Wear appropriate personal protective clothing to prevent skin contact.

Eyes: PREVENT EYE CONTACT - Wear appropriate eye protection to prevent eye contact.

Methacrylic acid appears as a clear colorless liquid (or low-melting solid) with a pungent odor. Corrosive to metals and tissue. Flash point 170 °F. Melting point 61 °F. May polymerize exothermically if heated or contaminated. If the polymerization takes place inside a container, the container may rupture violently. Less dense than water. Vapors heavier than air. Used to make plastics.

Methacrylic acid, stabilized appears as a clear colorless liquid with a pungent odor. Corrosive to metals and tissue. Combustible. Flash point 170 °F. Melting point 61 °F. May polymerize if contaminated or heated. If polymerization takes place inside a closed container, the container may violently rupture. Less dense than water and is soluble in water. Vapors heavier than air. Used to make plastics.

Liquid; Dry Powder

Colorless liquid or solid (below 61 degrees F) with an acrid, repulsive odor; [NIOSH]

COLOURLESS LIQUID OR COLOURLESS CRYSTALS WITH CHARACTERISTIC ODOUR.

Colorless liquid or solid (below 61 °F) with an acrid, repulsive odor.

Clear colorless liquid or colorless crystals

Long prisms

Acrid, repulsive odor

325 °F at 760 mmHg (NTP, 1992)

325 °F at 760 mmHg (NIOSH, 2024)

163 °C at 760 mm Hg

159-163 °C

163 °C @760 [mm Hg]

61 °F (NTP, 1992)

61 °F (NIOSH, 2024)

170 °F (NTP, 1992)

171 °F (NIOSH, 2024)

76 °C (open cup)

153 °F (67 °C) (closed cup)

68 °C c.c., 77 °C o.c.

171 °F (open-cup)

(oc) 171 °F

greater than or equal to 100 mg/mL at 63 °F (NTP, 1992)

9 % at 77 °F (NIOSH, 2024)

Soluble in chloroform; miscible with ethanol, ether

In water solubility, 89 g/L at 20 °C

Solubility in water, g/l at 20 °C: 98 (soluble)

(77 °F): 9%

1.015 at 68 °F (USCG, 1999) - Denser than water; will sink

1.02 (Liquid) (NIOSH, 2024) - Denser than water; will sink

1.0153 at 20 °C/4 °C

Relative density (water = 1): 1.02

1.015 at 68 °F

1.014 @25 °C

1.02 (Liquid)

2.97 (NTP, 1992) - Heavier than air; will sink (Relative to Air)

2.97 (Air = 1)

Relative vapor density (air = 1): 2.97

0.65 mmHg at 68 °F ; 1 mmHg at 77 °F (NTP, 1992)

Soluble in water.

Water soluble.

Acrylates and Acrylic Acids

Polymerizable Compounds

Acids, Carboxylic

Polymerizable

METHACRYLIC ACID reacts with strong oxidizing agents. Presents a storage hazard: violent exothermic polymerizations leading to explosion can occur spontaneously, particularly at low inhibitor or stabilizer concentrations [Anon., CISHC Chem. Safety Summ., 1979, 50, p. 34; Bond, J., Loss Prev. Bull., 1991, 101, p. 1].

Corrosive, moderately toxic liquid or low-melting solid, m.p. 16 °C. Flammable when exposed to heat, flame or strong oxidizers. A storage hazard; violent exothermic polymerization leading to explosion occur spontaneously, particularly at low inhibitor or stabilizer concentration [Anon., CISHC Chem. Safety Summ., 1979, 50, p. 34; Bond, J., Loss Prev. Bull., 1991, 101, p. 1].

Oxidizers, elevated temperatures, hydrochloric acid [Note: Typically contains 100 ppm of the monomethyl ether of hydroquinone to prevent polymerization].

Material will react with strong acids and alkalies. /Methacrylic acid, inhibited/

Oxidizers, elevated temperatures, hydrochloric acid [Note: Typically contains 100 ppm of the monomethyl ether of hydroquinone to prevent polymerization.]

Based on the available animal, clinical, and other data included in this report, the CIR Expert Panel concludes that Methacrylic Acid is safe as used as a nail primer by trained professionals, but there are insufficient data for retail use by consumers.

Safe for use in cosmetics, with qualifications

The substance can be absorbed into the body by inhalation.

inhalation, skin absorption, ingestion, skin and/or eye contact

Cough. Burning sensation. Shortness of breath. Laboured breathing.

Redness. Pain. Skin burns. Blisters.

Redness. Pain. Loss of vision. Severe burns.

Burning sensation in the mouth and in the throat and chest. Abdominal pain. Nausea. Vomiting. Diarrhoea.

irritation eyes, skin, mucous membrane; eye, skin burns

Eyes, skin, respiratory system

Dermatotoxin - Skin burns.

Toxic Pneumonitis - Inflammation of the lungs induced by inhalation of metal fumes or toxic gases and vapors.

LD50 MOUSE ORAL 1250 MG/KG

LD50 Rat oral 1060 mg/kg

LD50 Mouse ip 48 mg/kg

LD50 Rabbit oral 1200 mg/kg

For more Non-Human Toxicity Values (Complete) data for METHACRYLIC ACID (10 total), please visit the HSDB record page.

Sprague-Dawley rats (5/group) /were dosed/ orally once with a neutralized mixture (29.7% active ingredients) and an unneutralized mixture (37.4% active ingredients) of methacrylic acid-polymethacrylic acid. The neutralized and unneutralized mixtures of methacrylic acid-polymethacrylic acid were administered at doses of 4.64, 10, 17.2, 21.5, 31.6 and 46.4 g/kg and 0.464, 1.0, 2.15, 4.64, 10 and 21.5 g/kg, respectively. Observations were performed immediately and at 1, 4 and 24 hr and once daily thereafter for 14 days. No toxic effects were observed at the two lowest doses of the neutralized compound. At the two highest doses transient depression, ataxia, diarrhea and weight loss were observed with death occurring sometime after 4 hr. Congestion of the major organs and inflammation of the gastrointestinal (GI) tract were observed at death. No toxic effects were observed at the two lowest doses of the unneutralized compound. Transient weight loss occurred at the 2.15 g/kg dose and transient depression, labored respiration, ataxia and weight loss occurred at the three highest doses. Death occurred in all animals at 24 hr at the highest dose. Congested lungs and marked inflammation of the GI tract at the highest dose was observed at death; no other major abnormalities were found at necropsy with either the neutralized or unneutralized compound. The acute oral LD50 for neutralized methacrylic acid-polymethacrylic acid was 10.5 g/kg based on the 29.7% active ingredients of this mixture. The acute oralLD50 for unneutralized methacrylic acid-polymethacrylic acid was 6.7 g/kg based on the 37.4% active ingredients of this mixture.

Albino rats (10/sex/group)/were dosed/ orally with a mixture of 0.3, 0.7 or 1.5% glacial methacrylic acid and polymethacrylic acid in drinking water for 90 days. The mixture was 50% glacial methacrylic acid and 50% polymethacrylic acid by weight. The polymethacrylic acid was a polymer as 23% polymethacrylic acid in water. The test mixture was reportedly 37.4% active ingredients but the author did not identify the active ingredients. A control group was also included. Calculations based on the activity of the mixture determined the concentrations delivered as 1.237, 2.886 and 6.185 mg active ingredients/ml water. At 30 and 90 days hematological studies and complete urine analyses were performed on five animals/sex/group. No treatment-related effects were noted with regard to physical appearance, behavior, growth and food consumption in the test animals compared to controls. Water consumption was significantly decreased for the intermediate and high dose males, probably as a result of a decreased palatability because drinking water was the vehicle for the compound. No deaths occurred among the test or control animals. Hematological values were generally within normal limits; however, the total red cell count at termination was decreased in control and test groups and was significantly decreased for the high dose females. Biochemical and urine analyses for the test groups were comparable to control values. Gross and microscopic examination of tissues reported no consistent compound related changes in the organs of test animals.

Male and female Beagle dogs (3/sex/group) were orally administered a neutralized mixture of glacial methacrylic acid and polymethacrylic acid. The neutralized mixture was 23 grams of methacrylic acid, 100 grams of polymethacrylic acid, and 32 grams of 50% NaOH. The dose of the active ingredients was 0, 250, 500 and 1000 mg/kg/day daily for 90 days. The six control dogs were normal throughout the study. The 250 mg/kg group had normal behavior and appearance while on study. No signs of treatment effect were observed in any of the animals and normal body weights were maintained. The 500 mg/kg group had normal behavior and appearance; however, slight weight loss was recorded in 5/6 dogs. The high dose group had an increased frequency of emesis and diarrhea. Hematology, biochemistry and urine analyses were normal for all test animals. At gross necropsy there were no compound related organ changes. Microscopic examination did not indicate any alterations attributable to oral administration of a mixture of glacial methacrylic acid and polymethacrylic acid to Beagle dogs. The GI mucosa of high dose animals did not have any compound related alterations.

Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Organic acids and related compounds/

Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist respirations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 mL/kg up to 200 mL of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool. Activated charcoal is not effective ... . Do not attempt to neutralize because of exothermic reaction. Cover skin burns with dry, sterile dressings after decontamination ... . /Organic acids and related compounds/

Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Early intubation, at the first sign of upper airway obstruction, may be necessary. Positive-pressure ventilation techniques with a bag valve mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Consider administering a beta agonist such as albuterol for severe bronchospasm ... . Monitor cardiac rhythm and treat arrhythmias as necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's (LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if patient is hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Organic acids and related compounds/

For those with frequent or potentially high exposure (half the TLV or greater), the following are recommended before beginning work and at regular times after that: Lung function test. If symptoms develop or overexposure is suspected, the following may be useful: Kidney and liver function tests. Evaluation by a qualified allergist, including careful exposure history and special testing, may help diagnose skin allergy.

/HUMAN EXPOSURE STUDIES/ A group of six patients presenting allergic contact dermatitis to anaerobic acrylic sealants was patch-tested with various acrylates and methacrylates. The test with methacrylic acid was negative in all cases.

/SIGNS AND SYMPTOMS/ Consumers reported injuries (during the years 1987 to 1993) from four different nail primers which caused dermatitis (to include rash, redness, swelling, blisters, sores, weeping, lumps, inflamation, sunburn, chemical burn, and irritation) to the leg, hand, face, or finger. Nail primers were also reported to cause pain (to include itching, stinging, burning, soreness, and tingling) to the eye or fingers.

/CASE REPORTS/ A 12-month-old male spilled about 1 ounce of fingernail primer on his hands. Upon rubbing his mouth, he began drooling and frothing. He was taken to the hospital where his burns were treated and he was released the same day.

/CASE REPORTS/ A 2-year-old male spilled about 1 to 11/2 ounces of nail primer on his shirt and around his mouth and nose. His burns were treated at the hospital and endoscopy was performed because he had difficulty swallowing. He was released after four nights in the hospital.

For more Human Toxicity Excerpts (Complete) data for METHACRYLIC ACID (14 total), please visit the HSDB record page.

/LABORATORY ANIMALS: Acute Exposure/ A guinea pig maximization test using female Hartley guinea pigs (5 animals/group). Sensitization concentrations for methacrylic acid were 0.02, 0.1, 0.2, 0.5, 1.0 and 5.0%. Dichloronitrobenzene and distilled water were used as the positive and negative control, respectively. Induction was performed in two stages. In the first stage, 50 uL of methacrylic acid was injected into a shaved area on the back, near the neck. An aqueous mixture of Freund's complete adjuvant (FCA), methacrylic acid or Methacrylic Acid plus FCA was injected at two sites. The guinea pigs were pretreated with 10% sodium lauryl sulfate in petrolatum for 24 hr during the second stage of induction which occurred two weeks later. Next, a filter paper patch soaked in 200 uL of the test substance was placed on the shaved back of the guinea pig. The patch remained in place for 48 hr. Methacrylic acid, 100 uL undiluted, was applied topically on day 22 as the challenge test. The hair on the flank was shaved and methacrylic acid was applied to the skin by the closed-patch testing technique. The challenge site was evaluated 24 hr after removal of the patch. The results from the sensitization experiments determined that a 0.2% concentration of Methacrylic Acid was to be used in the elicitation test. The challenge concentrations were 10, 25, 50 and 100% (5 animals/group) and were applied to four points on each animal. Skin reactions were evaluated after 24 and 48 h. All concentrations of Methacrylic Acid caused strong rubefaction and scab formation. The investigators had difficulty determining if these were type IV hypersensitivity reactions or simple irritation. All guinea pigs had significant responses, 7/7 on the scale used. Elicitation tests indicated that as the concentration of methacrylic acid increased, the response increased. methacrylic acid produced rubefaction at all concentrations tested.

/LABORATORY ANIMALS: Acute Exposure/ A study in mice suggested that 4.8% methacrylic acid would act as a mild irritant to humans, even when in solution with acetone. Doubling the concentration to 9.6% methacrylic acid caused severe irritation equivalent to second degree burns to the skin. A concentration of 19.2% resulted in visible destruction to the skin epithelium and injury to all layers of the skin bordering on corrosive.

/LABORATORY ANIMALS: Acute Exposure/ The potential for methacrylic acid to induce delayed contact hypersensitivity in groups of 20 male Hartley guinea pigs was assessed using the Buehler method. A sample (0.4 mL) of a 20% solution of methacrylic acid in deionized water was applied to the shaved left flank of the animals for 6 hr using occlusive dressing. A 15% solution was used for subsequent applications (weekly for 2 weeks) since eschar formation was observed within 72 hr of applying the 20% solution. The site was scored for irritation after the dressing was removed from the application site. The animals were not treated for 14 days and then were challenged by application to the clipped right flank using the same procedure. The site was examined for dermal irritation and/or signs of sensitization about 24, 48 and 72 hr after removal of the challenge application. No signs of sensitization were observed following the challenge. Negative and positive control groups were included in the study and gave the expected responses.

/LABORATORY ANIMALS: Acute Exposure/ The footpads of female Hartley guinea pigs four times with an emulsion of 2 mg/mL methacrylic acid in ethanol:saline (1:4) in Freund's complete adjuvant (FCA). An additional 0.1 mL of the emulsion was injected into the nape of the neck. The animals received a total of 1 mg of methacrylic acid. Seven days later, and weekly thereafter for up to 12 weeks, 0.02 mL of a solution in acetone:olive oil (4:1) was dropped onto the shaved flank of the animals, using a different site for each application. Methacrylic acid did not induce contact sensitization using this protocol.

For more Non-Human Toxicity Excerpts (Complete) data for METHACRYLIC ACID (58 total), please visit the HSDB record page.

The following link will take the user to the National Toxicology Program (NTP) Test Agent Search Results page, which tabulates all of the "Standard Toxicology & Carcinogenesis Studies", "Developmental Studies", and "Genetic Toxicity Studies" performed with this chemical. Clicking on the "Testing Status" link will take the user to the status (i.e., in review, in progress, in preparation, on test, completed, etc.) and results of all the studies that the NTP has done on this chemical.[Available from: http://ntp-apps.niehs.nih.gov/ntp_tox/index.cfm?fuseaction=ntpsearch.searchresults&searchterm=79-41-4]

LC50 Oncorhynchus mykiss 85 mg/L/96 hr, flow-through bioassay, Temperature: 11-12 degrees C; 8.2-9.4 mg/L dissolved oxygen, 47-48 mg CaCo3/L, pH=5.3-7.8.

LC50 Brachydanio rerio >100-180 mg/L/96 hr, semi-static bioassay, Temperature: 24-25 degrees C; >= 6.1 mg/L dissolved oxygen, 227 mg CaCO3/L, pH=4.2-7.9.

LC50 Leuciscus idus melanotus 224 mg/L/48 hr, static bioassay, Temperature: 19-21 degrees C; hardness 15 degree d, pH=-7.7.

EC50 Daphnia magna >=100, <180 mg/L/24 hr, OECD 202, endpoint: immobilization

EC50 Selenastrum capricornutum 45mg/L/72 hr, OECD 201, endpoint: growth inhibition

LC50 Oncorhynchus mykiss 85 mg/L/96 hr, flow-through bioassay, Temperature: 11-12 degrees C; 8.2-9.4 mg/L dissolved oxygen, 47-48 mg CaCo3/L, pH=5.3-7.8.

LC50 Brachydanio rerio >100-180 mg/L/96 hr, semi-static bioassay, Temperature: 24-25 degrees C; >= 6.1 mg/L dissolved oxygen, 227 mg CaCO3/L, pH=4.2-7.9.

LC50 Leuciscus idus melanotus 224 mg/L/48 hr, static bioassay, Temperature: 19-21 degrees C; hardness 15 degree d, pH=-7.7.

EC50 Daphnia magna >=100, <180 mg/L/24 hr, OECD 202, endpoint: immobilization

EC50 Selenastrum capricornutum 45mg/L/72 hr, OECD 201, endpoint: growth inhibition

The substance is harmful to aquatic organisms.

Methacrylic acid's production and use in a wide variety of polymers, methacrylate resins and plastics, engineering adhesives, and organic syntheses, may result in its release to the environment through various waste streams. If released to air, a vapor pressure of 0.99 mm Hg at 25 °C indicates methacrylic acid will exist solely as a vapor. Vapor-phase methacrylic acid will be degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals; the half-life for this reaction in air is estimated to be 21 hours. Vapor-phase methacrylic acid will be degraded in the atmosphere by reaction with ozone; the half-life for this reaction is estimated to be about 2.3 days. Methacrylic acid does not absorb light at wavelengths >290 nm and therefore is not expected to be susceptible to direct photolysis by sunlight. If released to soil, methacrylic acid is expected to have very high mobility based upon an average Koc of 15. A pKa 4.65, indicates that methacrylic acid will exist primarily in its anionic form under environmental conditions (pH 5-9) and will be nonvolatile from moist soil surfaces. Methacrylic acid is expected to volatilize from dry soil surfaces based upon its vapor pressure. Screening tests indicate that methacrylic acid is readily biodegradable; it reached 53% of its theoretical BOD in 5 days using a sewage inoculum. If released into water, methacrylic acid is not expected to adsorb to suspended solids and sediment based upon its average Koc. Volatilization from water surfaces is not expected to be an important fate process since methacrylic acid will exist primarily in its anion form under environmental conditions. An estimated BCF of 3.1 suggests the potential for bioconcentration in aquatic organisms is low. Methacrylic acid was determined to be stable to hydrolysis at pH 3, 7, and 11. Occupational exposure to methacrylic acid may occur through inhalation and dermal contact with this compound at workplaces where methacrylic acid is produced or used. Use data suggest that the general population may be exposed to methacrylic acid via inhalation dermal contact with consumer products contianing this compound. (SRC)

Methacrylic acid occurs in oil from roman chamomile(1).

Methacrylic acid's production and use in a wide variety of polymers(1), methacrylate resins and plastics(2,3), engineering adhesives(4), and organic syntheses(3), may result in its release to the environment through various waste streams(SRC).

TERRESTRIAL FATE: Based on a classification scheme(1), an average Koc value of 15(2), indicates that methacrylic acid is expected to have very high mobility in soil(SRC). A pKa 4.65(3), indicates that methacrylic acid will exist primarily in its anionic form under environmental conditions (pH 5-9) and will be nonvolatile from moist soil surfaces(SRC). Methacrylic acid is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 0.99 mm Hg(4). Screening tests indicate that methacrylic acid is readily biodegradable(5-7); it reached 53% of its theoretical BOD in 5 days using a sewage inoculum(5).

AQUATIC FATE: Based on a classification scheme(1), an average Koc value of 15(2), indicates that methacrylic acid is not expected to adsorb to suspended solids and sediment(SRC). A pKa 4.65(3), indicates that methacrylic acid will exist essentially in its anionic form under environmental conditions (pH 5-9) and will be nonvolatile from water surfaces(SRC). Methacrylic acid was determined to be stable to hydrolysis at pH 3, 7, and 11(2). According to a classification scheme(4), an estimated BCF of 3.1(SRC), from a log Kow of 0.93(5) and a regression-derived equation(6), suggests the potential for bioconcentration in aquatic organisms is low(SRC). Screening tests indicate that methacrylic acid is readily biodegradable(7-9); it reached 53% of its theoretical BOD in 5 days using a sewage inoculum(7).

ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), methacrylic acid, which has a vapor pressure of 0.99 mm Hg at 25 °C(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase methacrylic acid is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 21 hours(SRC), calculated from its rate constant of 1.9X10-11 cu cm/molecule-sec at 25 °C(SRC) that was derived using a structure estimation method(3). The rate constant for the vapor-phase reaction of methacrylic acid with ozone is 4.1X10-18 cu cm/molecule-sec at 23 °C(4). This corresponds to an atmospheric half-life of about 2.3 days(SRC) at an atmospheric concentration of 7X10+11 ozone molecules per cu cm(5). Methacrylic acid does not absorb light at wavelengths >290 nm(6) and therefore is not expected to be susceptible to direct photolysis by sunlight(7).

AEROBIC: Methacrylic acid was rapidly biodegraded in tests using adapted activated sludge inoculum under aerobic conditions(1). Aerobic standard dilution tests using sewage inoculum provided 53% theoretical BOD after 5 days incubation(2), 68% COD after 19 days(3) and 86% theoretical COD after 42 days(3). The BOD5/COD ratio for methacrylic acid was determined to be 0.16, which is indicative of significant potential for biodegradability(4). In a Closed Bottle test, methacrylic acid was determined to be 86% degraded after 28 days and >95% methacrylic acid was degraded in the Zahn-Wellens test, time not specified(5).

The rate constant for the vapor-phase reaction of methacrylic acid with photochemically-produced hydroxyl radicals has been estimated as 1.9X10-11 cu cm/molecule-sec at 25 °C(SRC) using a structure estimation method(1). This corresponds to an atmospheric half-life of about 21 hours at an atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm(1). The rate constant for the vapor-phase reaction of methacrylic acid with ozone is 4.1X10-18 cu cm/molecule-sec at 23 °C(2). This corresponds to an atmospheric half-life of about 2.3 days(SRC) at an atmospheric concentration of 7X10+11 ozone molecules per cu cm(3). Methacrylic acid was determined to be stable to hydrolysis at pH 3, 7, and 11(4). Methacrylic acid does not absorb light at wavelengths >290 nm(5) and therefore is not expected to be susceptible to direct photolysis by sunlight(6).

An estimated BCF of 3.1 was calculated for methacrylic acid(SRC), using a log Kow of 0.93(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC).

An average Koc value of 15 has been reported for methacrylic acid(1). According to a classification scheme(2), this Koc value suggests that methacrylic acid is expected to have very high mobility in soil.

A pKa 4.65(1), indicates that methacrylic acid will exist primarily in its anionic form under environmental conditions (pH 5-9) and will be nonvolatile from water and moist soil surfaces(SRC). Methacrylic acid is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 0.99 mm Hg(2).

Methacrylic acid was detected, but not quantified, in 1 of 27 industrial wastewater survey samples from the paint and ink industry(1).

Methacrylic acid was identified as a volatile component of paint-coated steel plates heated to 350 °C, concentration ranging from 0.1 to 2 mg/cu m(1).

NIOSH (NOES Survey 1981-1983) has statistically estimated that 145,414 workers (46,453 of these were female) were potentially exposed to methacrylic acid in the US(1). Occupational exposure to methacrylic acid may occur through inhalation and dermal contact with this compound at workplaces where methacrylic acid is produced or used(SRC). Use data suggest that the general population may be exposed to methacrylic acid via inhalation dermal contact with consumer products contianing this compound(SRC).

SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.

Incineration.

/GUIDE 153P: SUBSTANCES - TOXIC AND/OR CORROSIVE (COMBUSTIBLE)/ Health: TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. /Methacrylic acid, inhibited; Methacrylic acid, stabilized/

/GUIDE 153P: SUBSTANCES - TOXIC AND/OR CORROSIVE (COMBUSTIBLE)/ Fire or Explosion: Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. Those substances designated with a "P" may polymerize explosively when heated or involved in a fire. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form. /Methacrylic acid, inhibited; Methacrylic acid, stabilized/

/GUIDE 153P: SUBSTANCES - TOXIC AND/OR CORROSIVE (COMBUSTIBLE)/ Public Safety: CALL Emergency Response Telephone Number ... . As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. Keep unauthorized personnel away. Stay upwind. Keep out of low areas. Ventilate enclosed areas. /Methacrylic acid, inhibited; Methacrylic acid, stabilized/

/GUIDE 153P: SUBSTANCES - TOXIC AND/OR CORROSIVE (COMBUSTIBLE)/ Protective Clothing: Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection. Structural firefighters' protective clothing provides limited protection in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible. /Methacrylic acid, inhibited; Methacrylic acid, stabilized/

For more DOT Emergency Guidelines (Complete) data for METHACRYLIC ACID (8 total), please visit the HSDB record page.

2531 153P

2531 153P(inhibited)

UN 2531; Methacrylic acid, inhibited

IMO 8.0; Methacrylic acid, inhibited

49 314 02; Methacrylic acid, glacial

No person may /transport,/ offer or accept a hazardous material for transportation in commerce unless that person is registered in conformance ... and the hazardous material is properly classed, described, packaged, marked, labeled, and in condition for shipment as required or authorized by ... /the hazardous materials regulations (49 CFR 171-177)./

The International Air Transport Association (IATA) Dangerous Goods Regulations are published by the IATA Dangerous Goods Board pursuant to IATA Resolutions 618 and 619 and constitute a manual of industry carrier regulations to be followed by all IATA Member airlines when transporting hazardous materials.

The International Maritime Dangerous Goods Code lays down basic principles for transporting hazardous chemicals. Detailed recommendations for individual substances and a number of recommendations for good practice are included in the classes dealing with such substances. A general index of technical names has also been compiled. This index should always be consulted when attempting to locate the appropriate procedures to be used when shipping any substance or article.

Corrosive

Do not transport with food and feedstuffs.

UN Hazard Class: 8; UN Pack Group: II