Tetrahydropyran
Also known as: THP, Oxane, Pentamethylene oxide, 1,5-Epoxypentane, Tetrahydro-2H-pyran, Oxacyclohexane
Tetrahydropyran (CAS 142-68-7) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H10O and a molecular weight of 86.132 g/mol. Key properties include a melting point of −45 °C(lit.), a boiling point of 88.0±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of -15.6±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 142-68-7
- Jingsj CID
- J-47640-4
- Molecular Formula
- C5H10O
- Molecular Weight
- 86.132 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −45 °C(lit.) |
|---|---|
| Boiling Point | 88.0±0.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | -15.6±0.0 °C |
| Exact Mass | 86.073166 |
| PSA | 9.23000 |
| LogP | 0.89 |
| Additional Property | 3 (vs air) |
| Vapor Pressure | 70.1±0.1 mmHg at 25°C |
| Refractive Index | 1.420 |
| Additional Property | 80 g/L (25 ºC) |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2932999099 |
|---|---|
| Summary | 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of Tetrahydropyran?
The CAS number of Tetrahydropyran is 142-68-7.
What are the molecular formula and molecular weight of Tetrahydropyran?
Tetrahydropyran has molecular formula C5H10O and molecular weight 86.132 g/mol.
Is Tetrahydropyran hazardous?
Tetrahydropyran has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Tetrahydropyran?
For Tetrahydropyran, Upstream Products: 2-Methoxytetrahydro-2H-pyran, Tetrahydrofurfuryl alcohol, 3,4-Dihydro-2-methoxy-2H-pyran; Downstream Products: 1-bromo-8-(tetrahydropyranyloxy)octane, 5-Bromo-1-pentanol, 1-Phenylpiperidine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Tetrahydropyran (CAS 142-68-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47640-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.