2,5-Diaminobenzenesulfonic acid
Also known as: 2,5-diaminobenzenesulphonic acid, p-phenylene-diamine-ortho-sulphonic acid, 1,4-Phenylenediamine-2-sulfonic acid, Benzenesulfonic acid, 2,5-diamino-, 2-Sulfo-p-phenylenediamine, 2,5-Diaminophenyl-1-sulfonic acid
2,5-Diaminobenzenesulfonic acid (CAS 88-45-9) 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 298-300ºC, a boiling point of 500ºC, a density of 1.6±0.1 g/cm3 and a flash point of Not applicable.. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 88-45-9
- Jingsj CID
- J-6005-9
- 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 | 298-300ºC |
|---|---|
| Boiling Point | 500ºC |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | Not applicable. |
| Exact Mass | 188.025558 |
| PSA | 114.79000 |
| LogP | -1.78 |
| Refractive Index | 1.684 |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
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 2,5-Diaminobenzenesulfonic acid?
The CAS number of 2,5-Diaminobenzenesulfonic acid is 88-45-9.
What are the molecular formula and molecular weight of 2,5-Diaminobenzenesulfonic acid?
2,5-Diaminobenzenesulfonic acid has molecular formula C6H8N2O3S and molecular weight 188.204 g/mol.
Is 2,5-Diaminobenzenesulfonic acid hazardous?
2,5-Diaminobenzenesulfonic acid has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of 2,5-Diaminobenzenesulfonic acid?
For 2,5-Diaminobenzenesulfonic acid, Upstream Products: 6-Aminobenzothiazole, 2,5-Dichlorobenzenesulfonic acid, 4-chloroaniline-3-sulfonic acid; Downstream Products: 2-Chloro-5-nitrobenzenesulfonic 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. "2,5-Diaminobenzenesulfonic acid (CAS 88-45-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6005-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.