2-Mercapto-2-methylpropionic acid

2-巯基异丁酸

Also known as: 2-Mercaptoisobutyric acid, 2-Mercapto-2-methylpropanoic acid, 2-Methyl-2-sulfanylpropanoic acid, 2-Thioisobutyric acid, Propanoic acid, 2-mercapto-2-methyl-

2-Mercapto-2-methylpropionic acid (CAS 4695-31-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H8O2S and a molecular weight of 120.170 g/mol. It is also known as 2-Mercaptoisobutyric acid, 2-Mercapto-2-methylpropanoic acid and 2-Methyl-2-sulfanylpropanoic acid. Key properties include a melting point of 59-64ºC, a boiling point of 214.2±23.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 83.3±22.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4695-31-2
Jingsj CID
J-1399371-3
Molecular Formula
C4H8O2S
Chinese Name
2-巯基异丁酸
Molecular Weight
120.170 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point59-64ºC
Boiling Point214.2±23.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point83.3±22.6 °C

Frequently Asked Questions

What is the CAS number of 2-Mercapto-2-methylpropionic acid?

The CAS number of 2-Mercapto-2-methylpropionic acid is 4695-31-2.

What are the molecular formula and molecular weight of 2-Mercapto-2-methylpropionic acid?

2-Mercapto-2-methylpropionic acid has molecular formula C4H8O2S and molecular weight 120.170 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2-Mercapto-2-methylpropionic acid (CAS 4695-31-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1399371-3 (accessed 2026-10-22).

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