2-Mercaptopropionic acid
2-巯基丙酸
Also known as: Thiolactic acid, 2-Mercaptopropanoic acid, (+/-)-2-Mercaptopropionic acid, 2-Thiolactic acid, Thiomilchsure, FEMA 3180, FEMA 3810, EINECS 201-206-5, MFCD00004862
2-Mercaptopropionic acid (CAS 79-42-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C3H6O2S and a molecular weight of 106.14400 g/mol. It is also known as Thiolactic acid, 2-Mercaptopropanoic acid and (+/-)-2-Mercaptopropionic acid. Key properties include a melting point of 10-14 °C(lit.), a boiling point of 102 °C16 mm Hg(lit.), a density of 1.196 g/mL at 25 °C(lit.) and a flash point of 190 °F. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 79-42-5
- Jingsj CID
- J-15285-1
- Molecular Formula
- C3H6O2S
- Chinese Name
- 2-巯基丙酸
- Molecular Weight
- 106.14400 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 10-14 °C(lit.) |
|---|---|
| Boiling Point | 102 °C16 mm Hg(lit.) |
| Density | 1.196 g/mL at 25 °C(lit.) |
| Flash Point | 190 °F |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of 2-Mercaptopropionic acid?
The CAS number of 2-Mercaptopropionic acid is 79-42-5.
What are the molecular formula and molecular weight of 2-Mercaptopropionic acid?
2-Mercaptopropionic acid has molecular formula C3H6O2S and molecular weight 106.14400 g/mol.
Is 2-Mercaptopropionic acid hazardous?
2-Mercaptopropionic acid 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. "2-Mercaptopropionic acid (CAS 79-42-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-15285-1 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.