Methanesulfonic anhydride
Also known as: Mesyl anhydride, Methanesulfonic acid anhydride, Methanesulfonic acid, anhydride, Methanesulfonyl anhydride, Methylsulfonic anhydride, Mesic anhydride, Methanesulphonic anhydride, Methylsulfonyl methanesulfonate, NSC 65906
Methanesulfonic anhydride (CAS 7143-01-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C2H6O5S2 and a molecular weight of 174.196 g/mol. Key properties include a melting point of 64-67 °C(lit.), a boiling point of 289.3±9.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 128.7±18.7 °C. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 7143-01-3
- Jingsj CID
- J-923555-6
- Molecular Formula
- C2H6O5S2
- Molecular Weight
- 174.196 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 64-67 °C(lit.) |
|---|---|
| Boiling Point | 289.3±9.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 128.7±18.7 °C |
| Exact Mass | 173.965668 |
| PSA | 94.27000 |
| LogP | -0.93 |
| Additional Property | 3.3 (vs air) |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.470 |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2904909090 |
|---|---|
| Summary | HS:2904909090 sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Methanesulfonic anhydride?
The CAS number of Methanesulfonic anhydride is 7143-01-3.
What are the molecular formula and molecular weight of Methanesulfonic anhydride?
Methanesulfonic anhydride has molecular formula C2H6O5S2 and molecular weight 174.196 g/mol.
Is Methanesulfonic anhydride hazardous?
Methanesulfonic anhydride has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of Methanesulfonic anhydride?
For Methanesulfonic anhydride, Upstream Products: Methanesulfonic acid, Dimethyl disulfide, Tetramethylsilane; Downstream Products: 1-(Methylsulfonyl)-1H-imidazole, 4-Fluorophenyl methyl sulfone, 1-Fluoro-3-(methylsulfonyl)benzene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Methanesulfonic anhydride (CAS 7143-01-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-923555-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.