2-Mercapto-2-methylpropionic acid
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. 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-1399371-0
- Molecular Formula
- C4H8O2S
- Molecular Weight
- 120.170 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 59-64ºC |
|---|---|
| Boiling Point | 214.2±23.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 83.3±22.6 °C |
| Exact Mass | 120.024498 |
| PSA | 76.10000 |
| LogP | 0.79 |
| Vapor Pressure | 0.1±0.9 mmHg at 25°C |
| Refractive Index | 1.493 |
| Storage Conditions | 2-8°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 such as PubChem 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-1399371-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.