C4H8O
72.11 g/mol
Industrial ChemicalDanger
Oxolane
CAS109-99-9EC203-726-8
Category
Industrial Chemical
Compound Class
Heterocycle
Primary Use
industrial solvent and chemical intermediate
Oxolane, also known as tetrahydrofuran (THF), is a colorless, water-miscible organic liquid with low viscosity. It is a cyclic ether widely used as an industrial solvent and chemical intermediate.
industrial solventchemical intermediate
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.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:California Proposition 65
CAS 109-99-9
Related Compounds
StrongSame Parent
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research compound
StrongSame Parent
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StrongSame Parent
Boron trifluoride tetrahydrofuran complex
CAS462-34-0
polymerization catalyst and semiconductor dopant
StrongStructure SimilarSimilarity 0.89
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industrial solvent and chemical intermediate
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Safety Reference
Danger
H225Highly flammable liquid and vapour
H319Causes serious eye irritation
H335May cause respiratory irritation
H351Suspected of causing cancer
H302Harmful if swallowed
H336May cause drowsiness or dizziness
H315Causes skin irritation
H332Harmful if inhaled
H361Suspected of damaging fertility or the unborn child
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H371May cause damage to organs
Customs Tariff Classification
The international HS code for Oxolane (CAS 109-99-9) is 2932.11.
HS code (international, 6-digit)
2932.11
EU CN code (8-digit)
2932 11 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
oxolane
InChIKey
WYURNTSHIVDZCO-UHFFFAOYSA-N
SMILES
C1CCOC1
Synonyms (76)
- THF
- 1,4-Epoxybutane
- Agrisynth THF
- Butane a,d-oxide
- Butane, 1,4-epoxy-
- Butane, alpha,delta-oxide
- Butane,4-epoxy-
- Butylene oxide
- Cyclotetramethylene
- Cyclotetramethylene oxide
- Diethylene oxide
- Dynasolve 150
- Furan, tetrahydro-
- Furanidine
- Hydrofuran
- Oxacyclopentane
- Oxolane
- THF (tetrahydrofuran)
- Tetrahydrofuraan
- Tetrahydrofuraan [Dutch]
- Tetrahydrofuran ACS
- Tetrahydrofuran SpS
- Tetrahydrofuran Ultra LC-MS
- Tetrahydrofuran unstabilised
- Tetrahydrofuran(THF)
- Tetrahydrofuran, Biograde
- Tetrahydrofuran, UV
- Tetrahydrofuran, anhydrous
- Tetrahydrofuran, p.a.
- Tetrahydrofurane
- Tetrahydrofuranne
- Tetrahydrofuranne [French]
- Tetraidrofurano
- Tetraidrofurano [Italian]
- Tetramethylene oxide
- terahydrofuran
- terahydrofurane
- terahyrofuran
- tetrahydofuran
- tetrahydofurane
- tetrahydorfuran
- tetrahydro-furan
- tetrahydrofuran solvent
- tetrahyrdofuran
- tetrahyrofuran
- tetraliydrofuran