| Agent Name | Isobutylene |
|---|---|
| Alternative Name | Isobutene |
| CAS Number | 115-11-7 |
| Formula | C4-H8 |
| Major Category | Other Classes |
| Synonyms | 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] UN1055 |
| Category | Aliphatics, Unsaturated |
| Description | Colorless liquid or gas with odor of coal gas; [Hawley] Compressed gas with an unpleasant odor; [MSDSonline] Boiling point = -6.9 deg C; [HSDB] |
| Sources/Uses | Used to make trimers, polymers, antioxidants (foods, packaging, food supplements, and plastics), high-octane aviation gasoline, tert-butanol methacrylates and other resins; [HSDB] |
| Comments | In confined space spill, may displace air and act as simple asphyxiant; Evaporating liquid can cause frostbite; Inhalation of high concentrations can cause CNS depression; [ICSC] May cause irritation; Evaporating liquid can cause frostbite; In confined space spill, may displace air and act as simple asphyxiant; Inhalation of high concentrations can cause CNS depression and anesthesia; [MSDSonline] See "Butene, all isomers." |
| Exposure Assessment | |
| Skin Designation (ACGIH) | No |
| TLV (ACGIH) | 250 ppm |
| Lethal Concentration | LC50 (rat) = 620,000 mg/m3/4h |
| Explanatory Notes | Flash point = -76 deg C; [Hawley] |
| Flammability (NFPA) | |
| Adverse Effects | |
| Neurotoxin | CNS Solvent Syndrome |
| Other Poison | Simple Asphyxiant |
| ACGIH Carcinogen | Not Classifiable |
| Links to Other NLM Databases | |
| Health Studies | Human Health Effects from Hazardous Substances Data Bank: |
| Toxicity Information | |
| Chemical Information | |
| Related Information in HazMap | |
| Diseases | Occupational diseases associated with exposure to this agent: |
Agent Name
Isobutylene
Alternative Name
Isobutene
CAS Number
115-11-7
Formula
C4-H8
Major Category
Other Classes
Synonyms
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] UN1055
Category
Aliphatics, Unsaturated
Description
Colorless liquid or gas with odor of coal gas; [Hawley] Compressed gas with an unpleasant odor; [MSDSonline] Boiling point = -6.9 deg C; [HSDB]
Sources/Uses
Used to make trimers, polymers, antioxidants (foods, packaging, food supplements, and plastics), high-octane aviation gasoline, tert-butanol methacrylates and other resins; [HSDB]
Comments
In confined space spill, may displace air and act as simple asphyxiant; Evaporating liquid can cause frostbite; Inhalation of high concentrations can cause CNS depression; [ICSC] May cause irritation; Evaporating liquid can cause frostbite; In confined space spill, may displace air and act as simple asphyxiant; Inhalation of high concentrations can cause CNS depression and anesthesia; [MSDSonline] See "Butene, all isomers."
Exposure Assessment
Skin Designation (ACGIH)
No
TLV (ACGIH)
250 ppm
Lethal Concentration
LC50 (rat) = 620,000 mg/m3/4h
Explanatory Notes
Flash point = -76 deg C; [Hawley]
Flammability (NFPA)
Adverse Effects
Neurotoxin
CNS Solvent Syndrome
Other Poison
Simple Asphyxiant
ACGIH Carcinogen
Not Classifiable
Links to Other NLM Databases
Toxicity Information
Chemical Information
Related Information in HazMap
Diseases
Occupational diseases associated with exposure to this agent: