Mercaptosuccinic acid
巯基丁二酸
Also known as: Thiomalic acid, DL-Mercaptosuccinic acid, 2-sulfanylbutanedioic acid, 2-Thiomalic acid, alpha-Mercaptosuccinic acid, 2-Mercaptosuccinic acid, DL-Thiomalic acid, 2-Sulfanylsuccinic acid
Mercaptosuccinic acid (CAS 70-49-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H6O4S and a molecular weight of 150.153 g/mol. It is also known as Thiomalic acid, DL-Mercaptosuccinic acid and 2-sulfanylbutanedioic acid. Key properties include a melting point of 155-157 °C(lit.), a boiling point of 256.3±30.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 108.8±24.6 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 70-49-5
- Jingsj CID
- J-28570-2
- Molecular Formula
- C4H6O4S
- Chinese Name
- 巯基丁二酸
- Molecular Weight
- 150.153 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 155-157 °C(lit.) |
|---|---|
| Boiling Point | 256.3±30.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 108.8±24.6 °C |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of Mercaptosuccinic acid?
The CAS number of Mercaptosuccinic acid is 70-49-5.
What are the molecular formula and molecular weight of Mercaptosuccinic acid?
Mercaptosuccinic acid has molecular formula C4H6O4S and molecular weight 150.153 g/mol.
Is Mercaptosuccinic acid hazardous?
Mercaptosuccinic acid has GHS signal word Warning.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Mercaptosuccinic acid (CAS 70-49-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-28570-2 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.