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."

Adverse Effects
Neurotoxin

CNS Solvent Syndrome

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: