Ethyl methanesulfonate
Also known as: Ethyl mesylate, EMS, Half-Myleran, Methanesulfonic acid ethyl ester, Ethyl ester of methanesulfonic acid, Ethyl methanesulphonate
Ethyl methanesulfonate (CAS 62-50-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C3H8O3S and a molecular weight of 124.15 g/mol. Key properties include a melting point of < 25ºC, a boiling point of 214.4±9.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 100.0±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H340 and H351 — Suspected of causing cancer. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 62-50-0
- Jingsj CID
- J-35541-9
- Molecular Formula
- C3H8O3S
- Molecular Weight
- 124.15 g/mol
- Category
- Organic Acids
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | < 25ºC |
|---|---|
| Boiling Point | 214.4±9.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 100.0±0.0 °C |
| Exact Mass | 124.019417 |
| PSA | 51.75000 |
| LogP | -0.03 |
| Vapor Pressure | 0.2±0.4 mmHg at 25°C |
| Refractive Index | 1.416 |
| Stability | Stable. Combustible. Incompatible with water, alkalies, oxidizing agents. |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H340
- H351 — Suspected of causing cancer
Frequently Asked Questions
What is the CAS number of Ethyl methanesulfonate?
The CAS number of Ethyl methanesulfonate is 62-50-0.
What are the molecular formula and molecular weight of Ethyl methanesulfonate?
Ethyl methanesulfonate has molecular formula C3H8O3S and molecular weight 124.15 g/mol.
Is Ethyl methanesulfonate hazardous?
Ethyl methanesulfonate has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H340; H351 — Suspected of causing cancer.
What are the upstream and downstream products of Ethyl methanesulfonate?
For Ethyl methanesulfonate, Upstream Products: Ethanol, Ethoxytrimethylsilane, Methanesulfonic acid; Downstream Products: 1-Butyl-3-methylimidazolium methanesulfonate, Ethyl benzoate, Methanesulfonic 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. "Ethyl methanesulfonate (CAS 62-50-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35541-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.