4-methyl-1-pentene

This chemical does not meet GHS hazard criteria for 4.1% (5 of 122) of reports.

H224 (18%): Extremely flammable liquid and vapor [Danger Flammable liquids]

H225 (77.9%): Highly Flammable liquid and vapor [Danger Flammable liquids]

H302 (18%): Harmful if swallowed [Warning Acute toxicity, oral]

H304 (41.8%): May be fatal if swallowed and enters airways [Danger Aspiration hazard]

H315 (49.2%): Causes skin irritation [Warning Skin corrosion/irritation]

H319 (49.2%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

H332 (18%): Harmful if inhaled [Warning Acute toxicity, inhalation]

H335 (49.2%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P270, P271, P280, P301+P316, P301+P317, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P317, P319, P321, P330, P331, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 122 reports by companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Reported as not meeting GHS hazard criteria per 5 of 122 reports by companies.

There are 6 notifications provided by 117 of 122 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.

H225: Highly Flammable liquid and vapor [Danger Flammable liquids]

P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501 (click each P-code to see the statement)

INHALATION: Call for medical aid. Remove the victim to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.

EYES: Separate the eyelids with the fingers and flush with plenty of water.

SKIN: Immediately wash with soap and copious amounts of water. (USCG, 1999)

Fire Extinguishing Agents Not to Be Used: Water may be ineffective.

Fire Extinguishing Agents: Carbon dioxide, dry chemical, alcohol foam. (USCG, 1999)

Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:

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

LARGE SPILL: Consider initial downwind evacuation for at least 300 meters (1000 feet).

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)

Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:

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. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. A vapor-suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean, non-sparking tools to collect absorbed material.

LARGE SPILL: Dike far ahead of liquid spill for later disposal. Water spray may reduce vapor, but may not prevent ignition in closed spaces. (ERG, 2024)

Wear self-contained breathing apparatus, rubber boots, heavy rubber gloves and eye protection. (USCG, 1999)

4-methyl-1-pentene is a colorless liquid. (USCG, 1999)

Colorless liquid; [CAMEO]

127.4 to 129.2 °F at 760 mmHg (USCG, 1999)

-25 °F (USCG, 1999)

0.665 (USCG, 1999) - Less dense than water; will float

438.93 mmHg (USCG, 1999)

272.0 [mmHg]

Boiling point

Composition

Heat of sublimation

High pressure fluid phase equilibrium

Optical coefficient

Phase diagram

Phase equilibrium

Refractive index

Thermal expansion coefficient

Vapor pressure

Vapor-liquid equilibrium

Other Classes -> Aliphatics, Unsaturated

FCS -> FDA Inventory of Food Contact Substances Listed in 21 CFR

Highly flammable. Water insoluble.

Hydrocarbons, Aliphatic Unsaturated

Highly Flammable

The unsaturated aliphatic hydrocarbons, such as 4-METHYL-1-PENTENE, are generally much more reactive than the alkanes. Strong oxidizers may react vigorously with them. Reducing agents can react exothermically to release gaseous hydrogen. In the presence of various catalysts (such as acids) or initiators, compounds in this class can undergo very exothermic addition polymerization reactions.

Neurotoxin - Acute solvent syndrome

Dermatotoxin - Skin burns.

Flammable Liquid