2,4-Diaminobenzenesulfonic acid
Also known as: 1,3-Diaminobenzene-4-sulfonic acid, 1,3-Phenylenediamine-4-sulfonic acid, m-Phenylenediaminesulfonic acid, 1,3-Diaminobenzenesulfonic acid, 2,4-Diaminobenzenesulphonic acid, Benzenesulfonic acid, 2,4-diamino-, 1,3-Diaminobenzene-6-sulfonic acid, m-phenylenediamine-4-sulfonic acid, 2,4-phenylenediamine-1-sulfonic acid
2,4-Diaminobenzenesulfonic acid (CAS 88-63-1) 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 188.204 g/mol. Key properties include a melting point of 260-266 °C (dec.), a boiling point of 313ºC and a density of 1.6±0.1 g/cm3. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H317 — May cause an allergic skin reaction and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 88-63-1
- Jingsj CID
- J-28691-6
- Molecular Formula
- C6H8N2O3S
- Molecular Weight
- 188.204 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 260-266 °C (dec.) |
|---|---|
| Boiling Point | 313ºC |
| Density | 1.6±0.1 g/cm3 |
| Exact Mass | 188.025558 |
| PSA | 114.79000 |
| LogP | -0.85 |
| Refractive Index | 1.684 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H317 — May cause an allergic skin reaction
- H319 — Causes serious eye irritation
Customs & Trade Information
| HS Code | 2921519090 |
|---|---|
| Summary | 2921519090. o-, m-, p-phenylenediamine, diaminotoluenes, and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:17.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2,4-Diaminobenzenesulfonic acid?
The CAS number of 2,4-Diaminobenzenesulfonic acid is 88-63-1.
What are the molecular formula and molecular weight of 2,4-Diaminobenzenesulfonic acid?
2,4-Diaminobenzenesulfonic acid has molecular formula C6H8N2O3S and molecular weight 188.204 g/mol.
Is 2,4-Diaminobenzenesulfonic acid hazardous?
2,4-Diaminobenzenesulfonic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H317 — May cause an allergic skin reaction; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 2,4-Diaminobenzenesulfonic acid?
For 2,4-Diaminobenzenesulfonic acid, Upstream Products: 1,3-Benzothiazol-5-amine, 2,4-Dinitrobenzenesulfonic acid, Metanilic acid; Downstream Products: 1-Aminoanthraquinone-2-sulfonic acid, 2-amino-4-nitrobenzenesulfonic acid, 4-Acetamido-2-aminobenzenesulfonic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,4-Diaminobenzenesulfonic acid (CAS 88-63-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-28691-6 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.