Butene, all isomers

Agent Name
Butene, all isomers
CAS Number
106-98-9; 107-01-7; 590-18-1; 624-64-6; 25167-67-3; 115-11-7
Formula
C4-H8
Major Category
Other Classes
Synonyms
Butene; Butylene; n-Butene; n-Butylene; trans-2-Butene; 2-Butene, (E)-; 2-trans-Butene; Low-boiling butene-2; beta-trans-Butylene; trans-1,2-Dimethylethylene; trans-Butene; cis-2-Butene; 2-Butene, (Z)-; High-boiling butene-2; beta-cis-Butylene; cis-1,2-Dimethylethylene; cis-Butene; 2-Butene; Butene-2; Butylene-2; Dimethylethylene; Pseudobutylene; beta-Butylene; Butene, mixed -1- and -2- isomers; 1-Butylene; But-1-ene; Ethylethylene; alpha-Butene; alpha-Butylene; Isobutylene; 1,1-Dimethylethene; 1,1-Dimethylethylene; 1-Propene, 2-methyl-; 2-Methyl-1-propene; 2-Methylpropene; 2-Methylpropylene; Isobutene; Isopropylidenemethylene; Propene, 2-methyl-; gamma-Butylene; sym-Dimethylethylene; [ChemIDplus] UN1012; UN1075
Category
Aliphatics, Unsaturated
Description
A colorless liquefied gas; [Hawley]
Sources/Uses
Butenes are present in gasoline, vehicle exhaust, and urban air (<10 ppb); 2-Butene is used to make other chemicals. Isobutene is used to make MTBE, aviation fuel, butyl rubber, and other polymers. [ACGIH] 1-Butene is used as a co-monomer for high density polyethylene in blow-molding resins and as a monomer for polybutene in plastic pipe and film; [HSDB]
Comments
Single TLV for all isomers because they are often used as mixtures; Butene causes anesthesia in animal experiments. Respiratory arrest occurs in the range of 210,000 to 320,000 ppm. [ACGIH] In a confined space spill, may displace air and act as simple asphyxiant; Evaporating liquid can cause frostbite; [CHEMINFO]; May cause central nervous system effects including unconsciousness; [ICSC]
Biomedical References
Search PubMed

Exposure Assessment

Skin Designation (ACGIH)
No
TLV (ACGIH)
250 ppm
Explanatory Notes
Carcinogenicity category is A4 for isobutene, CAS# 115-11-7. [ACGIH]
NFPA
burn readily

Adverse Effects

Neurotoxin
Acute solvent syndrome
ACGIH Carcinogen
Not Classifiable
Other Poison
Simple Asphyxiant

Diseases, Processes, and Activities Linked to This Agent

Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: