Tetrahydrothiophen-3-one
Also known as: Dihydrothiophen-3(2H)-one, Thiolan-3-one, 3-Tetrahydrothiophenone, 3-Thiophanone, Dihydro-3(2H)-thiophenone, 3-Oxotetrahydrothiophene, 4,5-Dihydro-3(2H)-thiophenone
Tetrahydrothiophen-3-one (CAS 1003-04-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H6OS and a molecular weight of 102.155 g/mol. Key properties include a boiling point of 175.2±23.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 77.2±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1003-04-9
- Jingsj CID
- J-42544-5
- Molecular Formula
- C4H6OS
- Molecular Weight
- 102.155 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 175.2±23.0 °C at 760 mmHg |
|---|---|
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 77.2±0.0 °C |
| Exact Mass | 102.013931 |
| PSA | 42.37000 |
| LogP | -0.29 |
| Additional Property | >1 (vs air) |
| Vapor Pressure | 1.2±0.3 mmHg at 25°C |
| Refractive Index | 1.544 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. 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 Tetrahydrothiophen-3-one?
The CAS number of Tetrahydrothiophen-3-one is 1003-04-9.
What are the molecular formula and molecular weight of Tetrahydrothiophen-3-one?
Tetrahydrothiophen-3-one has molecular formula C4H6OS and molecular weight 102.155 g/mol.
Is Tetrahydrothiophen-3-one hazardous?
Tetrahydrothiophen-3-one has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of Tetrahydrothiophen-3-one?
For Tetrahydrothiophen-3-one, Upstream Products: Methyl 3-oxotetrahydrothiophene-2-carboxylate, Methyl 4-oxotetrahydrothiophene-3-carboxylate, Tetrahydrothiophen-3-ol; Downstream Products: 3-Butylthiophene, Tetrahydrothiophen-3-ol, 1,4-Dioxa-7-thiaspiro[4.4]nonane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Tetrahydrothiophen-3-one (CAS 1003-04-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42544-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.