Urea nitrate

H228 (100%): Flammable solid [Danger Flammable solids]

H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

P210, P240, P241, P264+P265, P280, P305+P351+P338, P337+P317, and P370+P378 (click each P-code to see the statement)

The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.

H201: (Deleted) Explosive; mass explosion hazard [Danger Explosives]

H316: Causes mild skin irritation [Warning Skin corrosion/irritation]

H320: Causes eye irritation [Warning Serious eye damage/eye irritation]

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

P210, P230, P240, P250, P261, P264+P265, P271, P280, P304+P340, P305+P351+P338, P319, P332+P317, P337+P317, P370+P380, P372, P373, P401, P403+P233, P405, and P501 (click each P-code to see the statement)

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.

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

If material on fire or involved in fire: Dangerously explosive. Do not fight fires in a cargo of explosives. Evacuate area and let burn. /Urea nitrate, dry/

Evacuation: If the material is on fire or involved in fire consider evacuation of one (1) mile radius. /Urea nitrate, dry/

If material on fire or involved in fire: Solid streams of water may spread fire. Use water in flooding quantities as fog. Use dry chemical, graphite, or dry earth. /Urea nitrate, wetted with not less than 10% water by mass/

If material on fire or involved in fire: Dangerously explosive. Flood with water. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. /Urea nitrate, wetted with not less than 30% water by mass/

Wear positive pressure self-contained breathing apparatus when fighting fires involving this material.

The primary hazard is from blast effect where the entire load can explode instantaneously and not from flying projectiles and fragments. /Urea nitrate, dry/

· 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.

· All equipment used when handling the product must be grounded.

· Do not touch or walk through spilled material.

Small Spill

· Flush area with large amounts of water.

Large Spill

· Wet down with water and dike for later disposal.

· KEEP "WETTED" PRODUCT WET BY SLOWLY ADDING FLOODING QUANTITIES OF WATER.

Immediate precautionary measure

· Isolate spill or leak area immediately for at least 100 meters (330 feet) in all directions.

· Consider initial evacuation for 500 meters (1/3 mile) in all directions.

· 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.

SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity 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 and plant life; and conformance with environmental and public health regulations.

SRP: The scientific literature for the use of contact lenses by industrial workers is inconsistent. The benefits or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.

If material not on fire and not involved in fire: Keep sparks, flames, and other sources of ignition away. Keep spilled material wet. Wet spilled material before picking it up. Do not attempt to sweep up dry material. /Urea nitrate, dry/

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. Cover all suspected material with wet sand or earth to prevent ignition until material can be permanently disposed of. /Urea nitrate, wetted with not less than 10% water by mass/

Personnel protection: Avoid breathing dusts, and fumes from burning 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. /Urea nitrate, dry; urea nitrate, wetted with not less than 10% water by mass/

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. Keep spilled material wet. Do not attempt to sweep up dry material. /Urea nitrate, wetted with not less than 30% water by mass/

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

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

CARGO Fire

· DO NOT fight fire when fire reaches cargo! Cargo may EXPLODE!

· Stop all traffic and clear the area for at least 1600 meters (1 mile) in all directions and let burn.

· Do not move cargo or vehicle if cargo has been exposed to heat.

TIRE or VEHICLE Fire

· Use plenty of water - FLOOD it! If water is not available, use CO2, dry chemical or dirt.

· If possible, and WITHOUT RISK, use unmanned master stream devices or monitor nozzles from maximum distance to prevent fire from spreading to cargo area.

· Pay special attention to tire fires as re-ignition may occur. Stand by, at a safe distance, with extinguisher ready for possible re-ignition.

Wear appropriate chemical protective gloves and goggles.

Colorless or white odorless solid; [HSDB] Colorless to white odorless crystalline powder; [MSDSonline]

Monoclinic leaflets from water

White leaflets

Colorless crystals

Crystalline solid

Colorless minerals or prisms

Odorless

152 °C (decomposes)

In alcohol, 1.35 g/100 g at 0 °C, 8.84 g/100 g at 65.3 °C

Insoluble in nitric acid

In water, 9.30 g/100 g at 0 °C, 39.84 g/100 g at 65.3 °C

1.690 g/cu cm at 20 °C

When heated to decomp ... emits toxic fumes of /nitroxides/.

Decomposes at 152 °C

Aqueous solution is acid

When heated to decomposition it emits toxic fumes of NOx.

Readily decomposes to urea and nitric acid in presence of water

Nitrogen Compounds -> Nitrates and Nitrites

Flammable agents - 2nd degree

Reactive agents - 3rd degree

The presence of heavy metals (e.g., lead, iron) catalyzes the thermal decomposition of urea nitrate.

Methemoglobinemia - The presence of increased methemoglobin in the blood; the compound is classified as secondary toxic effect

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. /Nitrates, nitrites, 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 ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for shock and treat if necessary ... . Anticipate seizures and treat as 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. Administer activated charcoal ... . /Nitrates, nitrites, and related compounds/

Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious or is in severe respiratory distress. Monitor cardiac rhythm and treat arrhythmias if 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. If unresponsive to these measures, vasopressors may be helpful. Watch for signs of fluid overload ... . Treat seizures with diazepam or lorazepam ... . Administer 1% solution methylene blue if patient is symptomatic with severe hypoxia, cyanosis, and cardiac compromise not responding to oxygen. ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Nitrates, nitrites, and related compounds/

/SIGNS AND SYMPTOMS/ /IT IS/ MILDLY IRRITATING TO SKIN, MUCOUS MEMBRANES.

Urea nitrate's production and use in explosives and as a chemical reagent may result in its release to the environment through various waste streams; its use as a fertilizer will result in its direct release to the environment. If released to air, an estimated vapor pressure of 7.59X10-8 mm Hg at 25 °C indicates urea nitrate will exist solely in the particulate phase in the atmosphere. Particulate-phase urea nitrate will be removed from the atmosphere by wet or dry deposition. Urea nitrate does not contain chromophores that absorb at wavelengths >290 nm, and therefore is not expected to be susceptible to direct photolysis by sunlight. If released to soil, urea nitrate is expected to have very high mobility based upon an estimated Koc of 6.0. Volatilization from moist soil surfaces is not expected to be an important fate process based upon an estimated Henry's Law constant of 1.7X10-17 atm-cu m/mole. If released into water, urea nitrate is not expected to adsorb to suspended solids and sediment based upon the estimated Koc. Volatilization from water surfaces is not expected to be an important fate process based upon this compound's estimated Henry's Law constant. Biodegradation data were not available. An estimated BCF of 3.2 suggests the potential for bioconcentration in aquatic organisms is low. Hydrolysis is not expected to be an important environmental fate process since this compound lacks functional groups that hydrolyze under environmental conditions. Occupational exposure to urea nitrate may occur through inhalation of dust and dermal contact with this compound at workplaces where urea nitrate is produced or used. Use data indicate that the general population may be exposed to urea nitrate via dermal contact with this compound, particularly in locations where urea nitrate is used as a fertilizer. (SRC)

Urea nitrate's production and use in explosives and as a chemical reagent(1) may result in its release to the environment through various waste streams; its use as a fertilizer(1) will result in its direct release to the environment(SRC).

TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 6.0(SRC), determined from a structure estimation method(2), indicates that urea nitrate is expected to have very high mobility in soil(SRC). Volatilization of urea nitrate from moist soil surfaces is not expected to be an important fate process(SRC) given an estimated Henry's Law constant of 1.7X10-17 atm-cu m/mole(SRC), using a fragment constant estimation method(3). Urea nitrate is not expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 7.59X10-8 mm Hg at 25 °C(SRC), determined from a fragment constant method(4). Biodegradation data in soil were not available(SRC, 2010).

AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 6.0(SRC), determined from a structure estimation method(2), indicates that urea nitrate is not expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is not expected(3) based upon an estimated Henry's Law constant of 1.7X10-17 atm-cu m/mole(SRC), developed using a fragment constant estimation method(4). According to a classification scheme(5), an estimated BCF of 3.2(SRC), from an estimated log Kow of -3.51(6) and a regression-derived equation(2), suggests the potential for bioconcentration in aquatic organisms is low(SRC). Biodegradation data in water were not available(SRC, 2010).

ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), urea nitrate, which has an estimated vapor pressure of 7.59X10-8 mm Hg at 25 °C(SRC), determined from a fragment constant method(2), is expected to exist solely in the particulate phase in the ambient atmosphere. Particulate-phase urea nitrate may be removed from the air by wet or dry deposition(SRC). Urea nitrate does not contain chromophores that absorb at wavelengths >290 nm(3), and therefore is not expected to be susceptible to direct photolysis by sunlight(SRC).

Urea nitrate is not expected to undergo hydrolysis in the environment due to the lack of functional groups that hydrolyze under environmental conditions(1). Urea nitrate does not contain chromophores that absorb at wavelengths >290 nm(1), and therefore is not expected to be susceptible to direct photolysis by sunlight(SRC).

An estimated BCF of 3.2 was calculated in fish for urea nitrate(SRC), using an estimated log Kow of -3.51(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).

Using a structure estimation method based on molecular connectivity indices(1), the Koc of urea nitrate can be estimated to be 6.0(SRC). According to a classification scheme(2), this estimated Koc value suggests that urea nitrate is expected to have very high mobility in soil.

The Henry's Law constant for urea nitrate is estimated as 1.7X10-17 atm-cu m/mole(SRC) using a fragment constant estimation method(1). This Henry's Law constant indicates that urea nitrate is expected to be essentially nonvolatile from water surfaces(2). Urea nitrate is not expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 7.59X10-8 mm Hg(SRC), determined from a fragment constant method(3).

Occupational exposure to urea nitrate may occur through inhalation of dust and dermal contact with this compound at workplaces where urea nitrate is produced or used. Use data indicate that the general population may be exposed to urea nitrate via dermal contact with this compound, particularly in locations where urea nitrate is used as a fertilizer. (SRC)

Urea nitrate's production and use in explosives and as a chemical reagent may result in its release to the environment through various waste streams; its use as a fertilizer will result in its direct release to the environment. If released to air, an estimated vapor pressure of 7.59X10-8 mm Hg at 25 °C indicates urea nitrate will exist solely in the particulate phase in the atmosphere. Particulate-phase urea nitrate will be removed from the atmosphere by wet or dry deposition. Urea nitrate does not contain chromophores that absorb at wavelengths >290 nm, and therefore is not expected to be susceptible to direct photolysis by sunlight. If released to soil, urea nitrate is expected to have very high mobility based upon an estimated Koc of 6.0. Volatilization from moist soil surfaces is not expected to be an important fate process based upon an estimated Henry's Law constant of 1.7X10-17 atm-cu m/mole. If released into water, urea nitrate is not expected to adsorb to suspended solids and sediment based upon the estimated Koc. Volatilization from water surfaces is not expected to be an important fate process based upon this compound's estimated Henry's Law constant. Biodegradation data were not available. An estimated BCF of 3.2 suggests the potential for bioconcentration in aquatic organisms is low. Hydrolysis is not expected to be an important environmental fate process since this compound lacks functional groups that hydrolyze under environmental conditions. Occupational exposure to urea nitrate may occur through inhalation of dust and dermal contact with this compound at workplaces where urea nitrate is produced or used. Use data indicate that the general population may be exposed to urea nitrate via dermal contact with this compound, particularly in locations where urea nitrate is used as a fertilizer. (SRC)

Urea nitrate's production and use in explosives and as a chemical reagent(1) may result in its release to the environment through various waste streams; its use as a fertilizer(1) will result in its direct release to the environment(SRC).

TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 6.0(SRC), determined from a structure estimation method(2), indicates that urea nitrate is expected to have very high mobility in soil(SRC). Volatilization of urea nitrate from moist soil surfaces is not expected to be an important fate process(SRC) given an estimated Henry's Law constant of 1.7X10-17 atm-cu m/mole(SRC), using a fragment constant estimation method(3). Urea nitrate is not expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 7.59X10-8 mm Hg at 25 °C(SRC), determined from a fragment constant method(4). Biodegradation data in soil were not available(SRC, 2010).

AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 6.0(SRC), determined from a structure estimation method(2), indicates that urea nitrate is not expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is not expected(3) based upon an estimated Henry's Law constant of 1.7X10-17 atm-cu m/mole(SRC), developed using a fragment constant estimation method(4). According to a classification scheme(5), an estimated BCF of 3.2(SRC), from an estimated log Kow of -3.51(6) and a regression-derived equation(2), suggests the potential for bioconcentration in aquatic organisms is low(SRC). Biodegradation data in water were not available(SRC, 2010).

ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), urea nitrate, which has an estimated vapor pressure of 7.59X10-8 mm Hg at 25 °C(SRC), determined from a fragment constant method(2), is expected to exist solely in the particulate phase in the ambient atmosphere. Particulate-phase urea nitrate may be removed from the air by wet or dry deposition(SRC). Urea nitrate does not contain chromophores that absorb at wavelengths >290 nm(3), and therefore is not expected to be susceptible to direct photolysis by sunlight(SRC).

Urea nitrate is not expected to undergo hydrolysis in the environment due to the lack of functional groups that hydrolyze under environmental conditions(1). Urea nitrate does not contain chromophores that absorb at wavelengths >290 nm(1), and therefore is not expected to be susceptible to direct photolysis by sunlight(SRC).

An estimated BCF of 3.2 was calculated in fish for urea nitrate(SRC), using an estimated log Kow of -3.51(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).

Using a structure estimation method based on molecular connectivity indices(1), the Koc of urea nitrate can be estimated to be 6.0(SRC). According to a classification scheme(2), this estimated Koc value suggests that urea nitrate is expected to have very high mobility in soil.

The Henry's Law constant for urea nitrate is estimated as 1.7X10-17 atm-cu m/mole(SRC) using a fragment constant estimation method(1). This Henry's Law constant indicates that urea nitrate is expected to be essentially nonvolatile from water surfaces(2). Urea nitrate is not expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 7.59X10-8 mm Hg(SRC), determined from a fragment constant method(3).

Occupational exposure to urea nitrate may occur through inhalation of dust and dermal contact with this compound at workplaces where urea nitrate is produced or used. Use data indicate that the general population may be exposed to urea nitrate via dermal contact with this compound, particularly in locations where urea nitrate is used as a fertilizer. (SRC)

SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity 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 and plant life; and conformance with environmental and public health regulations.

/GUIDE 113: FLAMMABLE SOLIDS - TOXIC (WET/DESENSITIZED EXPLOSIVE)/ Fire or Explosion: Flammable/combustible material. May be ignited by heat, sparks or flames. DRIED OUT material may explode if exposed to heat, flame, friction or shock; treat as an explosive (GUIDE 112). Keep material wet with water or treat as an explosive (Guide 112). Runoff to sewer may create fire or explosion hazard. /Urea nitrate, wetted with not less than 10% water; Urea nitrate, wetted with not less than 20% water/

/GUIDE 113: FLAMMABLE SOLIDS - TOXIC (WET/DESENSITIZED EXPLOSIVE)/ Health: Some are toxic and may be fatal if inhaled, swallowed or absorbed through skin. Contact may cause burns to skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause pollution. /Urea nitrate, wetted with not less than 10% water; Urea nitrate, wetted with not less than 20% water/

/GUIDE 113: FLAMMABLE SOLIDS - TOXIC (WET/DESENSITIZED EXPLOSIVE)/ Public Safety: CALL Emergency Response Telephone Number. ... Isolate spill or leak area immediately for at least 100 meters (330 feet) in all directions. Keep unauthorized personnel away. Stay upwind. Ventilate closed spaces before entering. /Urea nitrate, wetted with not less than 10% water; Urea nitrate, wetted with not less than 20% water/

/GUIDE 113: FLAMMABLE SOLIDS - TOXIC (WET/DESENSITIZED EXPLOSIVE)/ Protective Clothing: Wear positive pressure self-contained breathing apparatus (SCBA). Structural firefighters' protective clothing will only provide limited protection. /Urea nitrate, wetted with not less than 10% water; Urea nitrate, wetted with not less than 20% water/

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

UN 0220; Urea nitrate, dry or containing less then 20% water; Urea nitrate, wet with 10% or more water; Urea nitrate, wetted with not less than 20% water

UN 1357; Urea nitrate, dry or containing less then 20% water; Urea nitrate, wet with 10% or more water; Urea nitrate, wetted with not less than 20% water

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.