3,4-Dihydro-2H-pyran
Also known as: 2,3-dihydropyran, dihydropyran, DHP, 2H-Pyran, 3,4-dihydro-, delta2-Dihydropyran, 3,4-2H-dihydropyran, DIHYDROPYRAN, DIHYDROPYRANE
3,4-Dihydro-2H-pyran (CAS 110-87-2) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H8O and a molecular weight of 84.116 g/mol. Key properties include a melting point of −70 °C(lit.), a boiling point of 86.5±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.
- 110-87-2
- Jingsj CID
- J-47649-3
- Molecular Formula
- C5H8O
- Molecular Weight
- 84.116 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −70 °C(lit.) |
|---|---|
| Boiling Point | 86.5±0.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | -15.6±0.0 °C |
| Exact Mass | 84.057518 |
| PSA | 9.23000 |
| LogP | 0.69 |
| Additional Property | 2.9 (vs air) |
| Vapor Pressure | 74.4±0.1 mmHg at 25°C |
| Refractive Index | 1.447 |
| Additional Property | 20 g/L (20 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 3,4-Dihydro-2H-pyran?
The CAS number of 3,4-Dihydro-2H-pyran is 110-87-2.
What are the molecular formula and molecular weight of 3,4-Dihydro-2H-pyran?
3,4-Dihydro-2H-pyran has molecular formula C5H8O and molecular weight 84.116 g/mol.
Is 3,4-Dihydro-2H-pyran hazardous?
3,4-Dihydro-2H-pyran 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 3,4-Dihydro-2H-pyran?
For 3,4-Dihydro-2H-pyran, Upstream Products: Tetrahydrofurfuryl alcohol, Methyl benzoate, isoprene; Downstream Products: (3R)-3-methyl-4-((tetrahydro-2H-pyran-2-yl)oxy)butanenitrile, ethyl tetrahydro-2H-pyran-2-carboxylate, 3-bromotetrahydro-2H-pyran-2-carbonitrile.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,4-Dihydro-2H-pyran (CAS 110-87-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47649-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.