Agent Name

3,3-Dimethyl-1-butene

Alternative Name

Neohexene

CAS Number

558-37-2

Formula

C6-H12

Major Category

Other Classes

Synonyms

Neohexene; 1-Butene, 3,3-dimethyl-; 2,2-Dimethyl-3-butene; 3,3-Dimethylbutene; Trimethylvinylmethane; tert-Butylethene; tert-Butylethylene; tert-Hexene; [ChemIDplus] UN3295

Category

Aliphatics, Unsaturated

Description

Colorless liquid; bp= 40-41 deg C; [Alfa Aesar MSDS]

Sources/Uses

Used as a chemical intermediate; [EPA ChAMP]

Comments

"Depression" noted in rats 1 hour after receiving 5 gm/kg by oral gavage; Rats were "prostrate," but no rats died during inhalation exposure to 51,000 ppm for 4 hours; No evidence of skin sensitization in guinea pigs and no evidence of reproductive or developmental toxicity; [EPA ChAMP: C6 Summaries] An irritant; Harmful by ingestion (may cause lung damage by aspiration); [Alfa Aesar MSDS] See "3-Methyl-1-butene."

Exposure Assessment
Vapor Pressure

431 mm Hg

Lethal Concentration

LC50 (rat) = > 51,000 ppm/4hr

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Hydrocarbons, liquid, n.o.s."

Adverse Effects
Neurotoxin

CNS Solvent Syndrome

Links to Other NLM Databases
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: