2H-Thiopyran-3,5(4H,6H)-dione
2H-噻喃-3,5(4H,6H)-二酮
Also known as: thiane-3,5-dione, 3,5-dioxothiane, 3,5-penthianedione, NSC 293807
2H-Thiopyran-3,5(4H,6H)-dione (CAS 6881-49-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H6O2S and a molecular weight of 130.165 g/mol. It is also known as thiane-3,5-dione, 3,5-dioxothiane and 3,5-penthianedione. Key properties include a melting point of 80-81°C, a boiling point of 257.9±20.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 120.3±11.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 6881-49-8
- Jingsj CID
- J-1002722-4
- Molecular Formula
- C5H6O2S
- Chinese Name
- 2H-噻喃-3,5(4H,6H)-二酮
- Molecular Weight
- 130.165 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 80-81°C |
|---|---|
| Boiling Point | 257.9±20.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 120.3±11.8 °C |
Frequently Asked Questions
What is the CAS number of 2H-Thiopyran-3,5(4H,6H)-dione?
The CAS number of 2H-Thiopyran-3,5(4H,6H)-dione is 6881-49-8.
What are the molecular formula and molecular weight of 2H-Thiopyran-3,5(4H,6H)-dione?
2H-Thiopyran-3,5(4H,6H)-dione has molecular formula C5H6O2S and molecular weight 130.165 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2H-Thiopyran-3,5(4H,6H)-dione (CAS 6881-49-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1002722-4 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.