Thiodiglycolic anhydride
Also known as: 1,4-Oxathiane-2,6-dione, Thiodiacetic anhydride, 2,2'-Thiodiacetic acid anhydride, 2,2'-Thiobisacetic anhydride, 1,4-Oxathiane-2,6-dione (Thiodiglycolic anhydride), Thiodiglycollic anhydride, MFCD00051689
Thiodiglycolic anhydride (CAS 3261-87-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H4O3S and a molecular weight of 132.13800 g/mol. Key properties include a melting point of 94 °C, a boiling point of 341.8ºC at 760 mmHg, a density of 1.468 g/cm3 and a flash point of 190.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3261-87-8
- Jingsj CID
- J-44163-4
- Molecular Formula
- C4H4O3S
- Molecular Weight
- 132.13800 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 94 °C |
|---|---|
| Boiling Point | 341.8ºC at 760 mmHg |
| Density | 1.468 g/cm3 |
| Flash Point | 190.5ºC |
| Exact Mass | 131.98800 |
| PSA | 68.67000 |
| Refractive Index | 1.545 |
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 Thiodiglycolic anhydride?
The CAS number of Thiodiglycolic anhydride is 3261-87-8.
What are the molecular formula and molecular weight of Thiodiglycolic anhydride?
Thiodiglycolic anhydride has molecular formula C4H4O3S and molecular weight 132.13800 g/mol.
What are the upstream and downstream products of Thiodiglycolic anhydride?
For Thiodiglycolic anhydride, Upstream Products: Thiodiacetic acid, Acetyl chloride; Downstream Products: 2-[(2-anilino-2-oxoethyl)sulfanyl]acetic acid, 2-[(1,3-benzothiazol-2-ylmethyl)sulfanyl]acetic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Thiodiglycolic anhydride (CAS 3261-87-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44163-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.