3-Amino-4-hydroxybenzoic acid
Also known as: 2-Amino-4-carboxyphenol, Benzoic acid, 3-amino-4-hydroxy-, 3-Amino-4-hydroxybenzenecarboxylic acid, 4-Hydroxy-3-aminobenzoic acid, EINECS 216-390-2, MFCD00007697
3-Amino-4-hydroxybenzoic acid (CAS 1571-72-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H7NO3 and a molecular weight of 153.135 g/mol. Key properties include a melting point of 208 °C (dec.)(lit.), a boiling point of 388.8±37.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 189.0±26.5 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1571-72-8
- Jingsj CID
- J-18648-1
- Molecular Formula
- C7H7NO3
- Molecular Weight
- 153.135 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 208 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 388.8±37.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 189.0±26.5 °C |
| Exact Mass | 153.042587 |
| PSA | 83.55000 |
| LogP | 0.55 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.691 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2922509090 |
|---|---|
| Summary | 2922509090. other amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 3-Amino-4-hydroxybenzoic acid?
The CAS number of 3-Amino-4-hydroxybenzoic acid is 1571-72-8.
What are the molecular formula and molecular weight of 3-Amino-4-hydroxybenzoic acid?
3-Amino-4-hydroxybenzoic acid has molecular formula C7H7NO3 and molecular weight 153.135 g/mol.
Is 3-Amino-4-hydroxybenzoic acid hazardous?
3-Amino-4-hydroxybenzoic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 3-Amino-4-hydroxybenzoic acid?
For 3-Amino-4-hydroxybenzoic acid, Upstream Products: 4-Hydroxy-3-nitrobenzoic acid, Butyl 4-hydroxybenzoate, 4-Chloro-3-nitrobenzoic acid; Downstream Products: 4-Hydroxy-3-iodobenzoic acid, 4-Acetoxy-3-iodobenzoic acid, 2-Aminophenol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Amino-4-hydroxybenzoic acid (CAS 1571-72-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18648-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.