4-Hydroxybenzenesulfonic acid
Also known as: 4-phenolsulfonic acid, p-phenolsulfonic acid, p-hydroxybenzenesulfonic acid, 4-hydroxyphenylsulfonic acid, Phenol-4-sulfonic acid, p-Sulfophenol, Sulfocarbolic acid, Benzenesulfonic acid, 4-hydroxy-
4-Hydroxybenzenesulfonic acid (CAS 98-67-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H6O4S and a molecular weight of 174.174 g/mol. Key properties include a melting point of 50(分解)ºC and a density of 1.6±0.1 g/cm3. It is classified under GHS with signal word Danger and hazard statements H290 and 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.
- 98-67-9
- Jingsj CID
- J-26740-3
- Molecular Formula
- C6H6O4S
- Molecular Weight
- 174.174 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 50(分解)ºC |
|---|---|
| Density | 1.6±0.1 g/cm3 |
| Exact Mass | 173.998672 |
| PSA | 82.98000 |
| LogP | -1.67 |
| Refractive Index | 1.615 |
GHS Safety & Compliance
- H290
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2908999090 |
|---|---|
| Summary | 2908999090 halogenated, sulphonated, nitrated or nitrosated derivatives of phenols or phenol-alcohols。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-Hydroxybenzenesulfonic acid?
The CAS number of 4-Hydroxybenzenesulfonic acid is 98-67-9.
What are the molecular formula and molecular weight of 4-Hydroxybenzenesulfonic acid?
4-Hydroxybenzenesulfonic acid has molecular formula C6H6O4S and molecular weight 174.174 g/mol.
Is 4-Hydroxybenzenesulfonic acid hazardous?
4-Hydroxybenzenesulfonic acid has GHS signal word Danger and hazard statements H290; H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of 4-Hydroxybenzenesulfonic acid?
For 4-Hydroxybenzenesulfonic acid, Upstream Products: Phenol, 4-Chlorobenzenesulfonic acid, 4-Hydroxybenzenesulfonyl chloride; Downstream Products: Fumaric acid, 1,4-Benzoquinone, 4-Hydroxybenzoic 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. "4-Hydroxybenzenesulfonic acid (CAS 98-67-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26740-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.