C4H8
56.11 g/mol
Industrial ChemicalDanger
Isobutene
CAS115-11-7EC204-066-3
Category
Industrial Chemical
Compound Class
Other
Primary Use
Monomer for synthetic rubber and plastics
Isobutene is a colorless gas with a faint petroleum-like odor, shipped as a liquefied gas under its own vapor pressure. It is highly flammable and can asphyxiate by displacing air.
Monomer for synthetic rubber and plasticsProduction of high-octane aviation gasoline (isooctane)Production of antioxidants for foods, packaging, and plastics
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
Octafluorocyclobutane
CAS115-25-3
Refrigerant and heat-transfer medium
ReferenceSame Category
Hexachloroendomethylenetetrahydrophthalic anhydride
CAS115-27-5
Flame retardant and epoxy resin hardener
ReferenceSame Category
Pentaerythritol
CAS115-77-5
Synthetic resins and explosives production
ReferenceSame Category
Triphenyl phosphate
CAS115-86-6
flame retardant and plasticizer
Safety Reference
Danger
H220Extremely flammable gas
H280Contains gas under pressure; may explode if heated
H336May cause drowsiness or dizziness
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for Isobutene (CAS 115-11-7) is 2901.23.
HS code (international, 6-digit)
2901.23
EU CN code (8-digit)
2901 23 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2-methylprop-1-ene
InChIKey
VQTUBCCKSQIDNK-UHFFFAOYSA-N
SMILES
CC(=C)C
Synonyms (33)
- Isoflurane EP Impurity F; Isobutylene
- 1,1-Dimethylethene
- 1,1-Dimethylethylene
- 1-Propene, 2-methyl-
- 2-METHYL-D3-PROPENE
- 2-METHYL-D3-PROPENE-3,3,3-D3
- 2-Methyl-1-propene
- 2-Methylpropene
- 2-Methylpropene, purum
- 2-Methylpropylene
- 2-methyl-1-propenhomopolymer
- 2-methyl-2 propene
- 2-methyl-l-propene
- 2-methylprop-1-ene
- Isobutene
- Isobutene (ca. 6% in Toluene)
- Isobutene (ca. 9% in Hexane)
- Isobutene trimer
- Isopropylidenemethylene
- Methylpropene
- Propene, 2-methyl-
- Propene, 2-methyl-, tetramer
- gamma-Butylene
- i-butene
- iso-butylene
- isobutylene, various grades
- sym-Dimethylethylene
- unsym. dimethylethylene
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