3,4-Diaminobenzenesulfonic acid
3,4-二氨基苯磺酸
Also known as: 3,4-Diaminobenzenesulphonic acid, 3,4-Diaminophenylsulfonic acid, Benzenesulfonic acid, 3,4-diamino-, 1,2-Phenylenediamine-4-sulfonic acid, o-Phenylenediamine-4-sulfonic acid, NSC 401086
3,4-Diaminobenzenesulfonic acid (CAS 7474-78-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H8N2O3S and a molecular weight of 188.20400 g/mol. It is also known as 3,4-Diaminobenzenesulphonic acid, 3,4-Diaminophenylsulfonic acid and Benzenesulfonic acid, 3,4-diamino-. Key properties include a melting point of -12ºC, a boiling point of 178-179 °C3 mm Hg(lit.), a density of 1.611g/cm3 and a flash point of >230 °F. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 7474-78-4
- Jingsj CID
- J-1516717-8
- Molecular Formula
- C6H8N2O3S
- Chinese Name
- 3,4-二氨基苯磺酸
- Molecular Weight
- 188.20400 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -12ºC |
|---|---|
| Boiling Point | 178-179 °C3 mm Hg(lit.) |
| Density | 1.611g/cm3 |
| Flash Point | >230 °F |
Frequently Asked Questions
What is the CAS number of 3,4-Diaminobenzenesulfonic acid?
The CAS number of 3,4-Diaminobenzenesulfonic acid is 7474-78-4.
What are the molecular formula and molecular weight of 3,4-Diaminobenzenesulfonic acid?
3,4-Diaminobenzenesulfonic acid has molecular formula C6H8N2O3S and molecular weight 188.20400 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,4-Diaminobenzenesulfonic acid (CAS 7474-78-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1516717-8 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.