4-Hydroxy-3-nitrobenzoic acid
Also known as: 3-Nitro-4-hydroxybenzoic acid, 3-Nitro-4-hydroxybenzoic acid, NHB, 4-carboxy-2-nitrophenol, p-carboxy-o-nitrophenol, RARECHEM AL BO 1164, LABOTEST-BB LT00452849
4-Hydroxy-3-nitrobenzoic acid (CAS 616-82-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H5NO5 and a molecular weight of 183.118 g/mol. Key properties include a melting point of 183-186 °C(lit.), a boiling point of 354.3±32.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 162.5±13.6 °C. 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.
- 616-82-0
- Jingsj CID
- J-44202-4
- Molecular Formula
- C7H5NO5
- Molecular Weight
- 183.118 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 183-186 °C(lit.) |
|---|---|
| Boiling Point | 354.3±32.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 162.5±13.6 °C |
| Exact Mass | 183.016769 |
| PSA | 103.35000 |
| LogP | 1.84 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.664 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2918290000 |
|---|---|
| Summary | HS: 2918290000 other carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) VAT:17.0% MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-Hydroxy-3-nitrobenzoic acid?
The CAS number of 4-Hydroxy-3-nitrobenzoic acid is 616-82-0.
What are the molecular formula and molecular weight of 4-Hydroxy-3-nitrobenzoic acid?
4-Hydroxy-3-nitrobenzoic acid has molecular formula C7H5NO5 and molecular weight 183.118 g/mol.
Is 4-Hydroxy-3-nitrobenzoic acid hazardous?
4-Hydroxy-3-nitrobenzoic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
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-Hydroxy-3-nitrobenzoic acid (CAS 616-82-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44202-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.