Tetrahydrofuran
Also known as: THF, Oxolane, Furanidine, Butylene oxide, Cyclotetramethylene oxide
Tetrahydrofuran (CAS 109-99-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H8O and a molecular weight of 72.106 g/mol. Key properties include a melting point of -108.4 ºC, a boiling point of 66 ºC, a density of 0.9±0.1 g/cm3 and a flash point of -21 ºC. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H302 — Harmful if swallowed and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 109-99-9
- Jingsj CID
- J-3040-7
- Molecular Formula
- C4H8O
- Molecular Weight
- 72.106 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -108.4 ºC |
|---|---|
| Boiling Point | 66 ºC |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | -21 ºC |
| Exact Mass | 72.057518 |
| PSA | 9.23000 |
| LogP | 0.33 |
| Additional Property | 2.5 (vs air) |
| Vapor Pressure | 152.4±0.1 mmHg at 25°C |
| Refractive Index | 1.417 |
| Additional Property | miscible |
| Additional Property | -108℃ |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H302 — Harmful if swallowed
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
- H351 — Suspected of causing cancer
Customs & Trade Information
| HS Code | 2932110000 |
|---|---|
| Summary | 2932110000 tetrahydrofuran。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.0%。general tariff:20.0% |
Frequently Asked Questions
What is the CAS number of Tetrahydrofuran?
The CAS number of Tetrahydrofuran is 109-99-9.
What are the molecular formula and molecular weight of Tetrahydrofuran?
Tetrahydrofuran has molecular formula C4H8O and molecular weight 72.106 g/mol.
Is Tetrahydrofuran hazardous?
Tetrahydrofuran has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H302 — Harmful if swallowed; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Tetrahydrofuran?
For Tetrahydrofuran, Upstream Products: 1,4-Butanediol, 2-Butyne-1,4-diol, Furan; Downstream Products: 2-Hydroxytetrahydrofuran, 2,4-Dimethylquinoline, Butylamine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Tetrahydrofuran (CAS 109-99-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3040-7 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.