Agent Name

Diisobutylene

Alternative Name

2,4,4-Trimethyl-1-pentene

CAS Number

107-39-1; 25167-70-8

Formula

C8-H16

Major Category

Other Classes

Synonyms

1-Methyl-1-neopentylethylene; 1-Pentene, 2,4,4-trimethyl-; 2,2,4-Trimethyl-4-pentene; 2,4,4-Trimethyl-1-pentene; [ChemIDplus] UN2050

Category

Aliphatics, Unsaturated

Description

Colorless liquid with an odor of gasoline; [HSDB]

Sources/Uses

Used in organic synthesis and in antioxidants, surfactants, lube additives, plasticizers, and rubber chemicals; Also used as a dispersant (co-monomer with maleic anhydride); [HSDB] Used in organic synthesis and to improve paper coatability; [AIHA]

Comments

A skin, eye, and respiratory tract irritant; [ICSC] Inhalation of high concentrations can cause CNS depression; May act as a simple asphyxiant at high vapor concentrations; [HSDB] An irritant; [MSDSonline] A CNS depressant; [AIHA]

Exposure Assessment
WEEL

75 ppm

Vapor Pressure

44.7 mm Hg

Lethal Concentration

LC50 (rat) = 6,875 ppm/4h

Explanatory Notes

Flash point = -5 deg C; [ICSC] The Guide in the Emergency Response Guidebook is for "Diisobutylene, isomeric compounds."

Flammability (NFPA)

3: May ignite at ambient temperature

Adverse Effects
Neurotoxin

CNS Solvent Syndrome

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: