C5H12
72.15 g/mol
Industrial ChemicalDanger
2-Methylbutane
CAS78-78-4EC201-142-8
Category
Industrial Chemical
Compound Class
Other
Primary Use
Gasoline additive and chemical intermediate
2-Methylbutane, commonly known as isopentane, is a colorless, highly flammable liquid with a gasoline-like odor that floats on water. It is primarily used as a gasoline additive to increase octane rating and as a chemical intermediate in industrial processes.
Gasoline additive for high-octane fuelChemical intermediate for amyl chloride and amyl alcoholsBlowing agent for polystyrene
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
Isoprene
CAS78-79-5
Monomer for polyisoprene and butyl rubber
ReferenceSame Category
Isobutyl alcohol
CAS78-83-1
solvent for coatings and adhesives
ReferenceSame Category
Methacrolein
CAS78-85-3
Chemical intermediate for resin production
ReferenceSame Category
2-chlorobutane
CAS78-86-4
Organic synthesis intermediate
Safety Reference
Danger
H224Extremely flammable liquid and vapour
H304May be fatal if swallowed and enters airways
H336May cause drowsiness or dizziness
H411Toxic to aquatic life with long lasting effects
H319Causes serious eye irritation
H335May cause respiratory irritation
H401Toxic to aquatic life
H315Causes skin irritation
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for 2-Methylbutane (CAS 78-78-4) is 2901.10.
HS code (international, 6-digit)
2901.10
EU CN code (8-digit)
2901 10 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-methylbutane
InChIKey
QWTDNUCVQCZILF-UHFFFAOYSA-N
SMILES
CCC(C)C
Synonyms (24)
- 1,1,2-Trimethylethane
- 1,1-dimethylpropane
- 1,2-Trimethylethane
- 2-METHYLBUTANE-2-D1
- 2-Methylbutane
- 2-Methylbutane, anhydrous
- 2-methylbutane;isopentane
- Butane, 2-methyl-
- Dimethylethylmethane
- Ethyldimethylmethane
- Exxsol isopentane S
- Isoamylhydride
- Polypropylene (Amorphous)
- R-601a
- Relebactam Impurity 24
- iso-Pentane
- methylbutane
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