8-Hydroxyquinoline-5-sulfonic acid
Also known as: 5-Quinolinesulfonic acid, 8-hydroxy-, 5-Sulfo-8-hydroxyquinoline, 5-Sulfo-8-quinolinol, 5-Sulfooxine, 8-Hydroxy-5-quinolinesulfonic acid, 8-Hydroxy-5-sulfoquinoline, 8-Hydroxyquinoline-5-sulfonate, 8-Hydroxyquinoline-5-sulphonic acid, 8-Quinolinol-5-sulfonic acid, Oxine-5-sulfonic acid, Sulfoxine
8-Hydroxyquinoline-5-sulfonic acid (CAS 84-88-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H7NO4S and a molecular weight of 225.221 g/mol. Key properties include a melting point of 311-313°C, a boiling point of 432ºC 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, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 84-88-8
- Jingsj CID
- J-1993278-6
- Molecular Formula
- C9H7NO4S
- Molecular Weight
- 225.221 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 311-313°C |
|---|---|
| Boiling Point | 432ºC |
| Density | 1.6±0.1 g/cm3 |
| Exact Mass | 225.009583 |
| PSA | 95.87000 |
| LogP | -1.28 |
| Refractive Index | 1.711 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933499090 |
|---|---|
| Summary | 2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 8-Hydroxyquinoline-5-sulfonic acid?
The CAS number of 8-Hydroxyquinoline-5-sulfonic acid is 84-88-8.
What are the molecular formula and molecular weight of 8-Hydroxyquinoline-5-sulfonic acid?
8-Hydroxyquinoline-5-sulfonic acid has molecular formula C9H7NO4S and molecular weight 225.221 g/mol.
Is 8-Hydroxyquinoline-5-sulfonic acid hazardous?
8-Hydroxyquinoline-5-sulfonic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 8-Hydroxyquinoline-5-sulfonic acid?
For 8-Hydroxyquinoline-5-sulfonic acid, Upstream Products: 8-Hydroxyquinoline, 2-Aminophenol-4-sulfonic acid, Acrolein; Downstream Products: Chiniofon, Tetracene, 6,11-Dihydroxy-5,12-naphthacenedione.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "8-Hydroxyquinoline-5-sulfonic acid (CAS 84-88-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1993278-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.