C8H18
114.23 g/mol
Industrial ChemicalDanger
Octane
CAS111-65-9EC203-892-1
Category
Industrial Chemical
Compound Class
Other
Primary Use
solvent and fuel component
Octane is a hydrocarbon and an alkane with eight carbon atoms. It is primarily used as a solvent and as a component of fuel, and its isomer 2,2,4-trimethylpentane (iso-octane) serves as a standard in the octane rating scale.
solventfuel component
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
StrongStructure SimilarSimilarity 1.00
Dodecane
CAS112-40-3
Solvent in industrial applications
StrongStructure SimilarSimilarity 1.00
Undecane
CAS1120-21-4
component of gasoline and solvent
StrongStructure SimilarSimilarity 1.00
Decane
CAS124-18-5
solvent and jet fuel standard
StrongStructure SimilarSimilarity 1.00
N-heptane
CAS142-82-5
solvent and organic synthesis
ApplicationSame Use
2,4-dimethylpentane
CAS108-08-7
solvent and fuel component
ReferenceSame Category
Adiponitrile
CAS111-69-3
Nylon intermediate manufacturing
ReferenceSame Category
2-butylaminoethanol
CAS111-75-1
chemical intermediate
ReferenceSame Category
2-butoxyethanol
CAS111-76-2
Solvent in surface coatings and cleaners
Safety Reference
Danger
H225Highly flammable liquid and vapour
H304May be fatal if swallowed and enters airways
H315Causes skin irritation
H336May cause drowsiness or dizziness
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H302Harmful if swallowed
H312Harmful in contact with skin
H319Causes serious eye irritation
H335May cause respiratory irritation
H411Toxic to aquatic life with long lasting effects
H370Causes damage to organs
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for Octane (CAS 111-65-9) 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
octane
InChIKey
TVMXDCGIABBOFY-UHFFFAOYSA-N
SMILES
CCCCCCCC
Synonyms (22)
- Heptane, methyl-
- Octane, all isomers
- Octane, anhydrous
- Octane, p.a.
- Octane, reagent grade
- Octane; NSC 9822; n-Octane
- Octil
- Oktan
- Oktan [Polish]
- Oktanen
- Oktanen [Dutch]
- Ottani
- Ottani [Italian]
- n-Oktan
- n-octane
- normal-Octane
- octan
- octane
- octano
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