Ethyl methanesulfonate

甲磺酸乙酯

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. It is also known as Ethyl mesylate, EMS and Half-Myleran. 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. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
62-50-0
Jingsj CID
J-35541-8
Molecular Formula
C3H8O3S
Chinese Name
甲磺酸乙酯
Molecular Weight
124.15 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point< 25ºC
Boiling Point214.4±9.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point100.0±0.0 °C

GHS Safety & Compliance

Irritant / Health HazardSignal word: Danger

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.

Data compiled from public chemical databases 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-35541-8 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.