Potassium methanesulfonate
Also known as: Methanesulfonic acid potassium salt, Potassium mesylate, Potassium methanesulphonate, Potassium methyl sulfonate, Methansulfonsaeure,Kalium-Verbindung, Methansulfonsaeure,Kalium-methansulfonat, MFCD00070544, EINECS 219-202-7
Potassium methanesulfonate (CAS 2386-56-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula CH3KO3S and a molecular weight of 134.19600 g/mol. Key properties include a melting point of 20ºC and a boiling point of 167ºC at 10 mm Hg. 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 Nov 3, 2026.
- CAS No.
- 2386-56-3
- Jingsj CID
- J-8353-4
- Molecular Formula
- CH3KO3S
- Molecular Weight
- 134.19600 g/mol
- Category
- Organic Acids
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 20ºC |
|---|---|
| Boiling Point | 167ºC at 10 mm Hg |
| Exact Mass | 133.94400 |
| PSA | 65.58000 |
| LogP | 0.24220 |
| Appearance | Lump/Powder | White |
| Additional Property | Soluble in water. |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Frequently Asked Questions
What is the CAS number of Potassium methanesulfonate?
The CAS number of Potassium methanesulfonate is 2386-56-3.
What are the molecular formula and molecular weight of Potassium methanesulfonate?
Potassium methanesulfonate has molecular formula CH3KO3S and molecular weight 134.19600 g/mol.
Is Potassium methanesulfonate hazardous?
Potassium methanesulfonate has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Potassium methanesulfonate (CAS 2386-56-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8353-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.