Methanesulfonic acid
Also known as: Methanesulphonic acid, Methylsulfonic acid, Mesic acid, Methane sulfonic acid
Methanesulfonic acid (CAS 75-75-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula CH4O3S and a molecular weight of 96.106 g/mol. Key properties include a melting point of 19 °C, a boiling point of 167 °C10 mm Hg(lit.), a density of 1.5±0.1 g/cm3 and a flash point of >110.0 °C. It is classified under GHS with signal word Danger and hazard statements H290, H302 — Harmful if swallowed and H312 — Harmful in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 75-75-2
- Jingsj CID
- J-47575-2
- Molecular Formula
- CH4O3S
- Molecular Weight
- 96.106 g/mol
- Category
- Organic Acids
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 19 °C |
|---|---|
| Boiling Point | 167 °C10 mm Hg(lit.) |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | >110.0 °C |
| Exact Mass | 95.988113 |
| PSA | 62.75000 |
| LogP | -1.89 |
| Additional Property | 3.3 (vs air) |
| Vapor Pressure | 1 mm Hg ( 20 °C) |
| Refractive Index | 1.448 |
GHS Safety & Compliance
- H290
- H302 — Harmful if swallowed
- H312 — Harmful in contact with skin
- H314 — Causes severe skin burns and eye damage
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2904100000 |
|---|---|
| Summary | 2904100000 derivatives containing only sulpho groups, their salts and ethyl esters。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Methanesulfonic acid?
The CAS number of Methanesulfonic acid is 75-75-2.
What are the molecular formula and molecular weight of Methanesulfonic acid?
Methanesulfonic acid has molecular formula CH4O3S and molecular weight 96.106 g/mol.
Is Methanesulfonic acid hazardous?
Methanesulfonic acid has GHS signal word Danger and hazard statements H290; H302 — Harmful if swallowed; H312 — Harmful in contact with skin.
What are the upstream and downstream products of Methanesulfonic acid?
For Methanesulfonic acid, Upstream Products: Methanethiol, iodomethane, Dimethyl disulfide; Downstream Products: Masitinib mesylate, 2-Chloroethyl methanesulfonate, Calcium methanesulfonate.
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 acid (CAS 75-75-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47575-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.