3-Hydroxybenzoic acid
Also known as: m-Hydroxybenzoic acid, m-Salicylic acid, 3-Carboxyphenol, Benzoic acid, 3-hydroxy-, META-HYDROXYBENZOIC ACID, m-Hydroxybenzoic, m-Oxybenzoic acid, 3-Hydroxy benzoic acid
3-Hydroxybenzoic acid (CAS 99-06-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H6O3 and a molecular weight of 138.121 g/mol. Key properties include a melting point of 201 °C, a boiling point of 346.1±25.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 177.3±19.7 °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.
- 99-06-9
- Jingsj CID
- J-32710-6
- Molecular Formula
- C7H6O3
- Molecular Weight
- 138.121 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 201 °C |
|---|---|
| Boiling Point | 346.1±25.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 177.3±19.7 °C |
| Exact Mass | 138.031693 |
| PSA | 57.53000 |
| LogP | 1.50 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.616 |
| Additional Property | slightly soluble |
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 | 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 3-Hydroxybenzoic acid?
The CAS number of 3-Hydroxybenzoic acid is 99-06-9.
What are the molecular formula and molecular weight of 3-Hydroxybenzoic acid?
3-Hydroxybenzoic acid has molecular formula C7H6O3 and molecular weight 138.121 g/mol.
Is 3-Hydroxybenzoic acid hazardous?
3-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-Hydroxybenzoic acid?
For 3-Hydroxybenzoic acid, Upstream Products: 3-bromobenzoic acid, 3-Carboxyphenylboronic acid, 3-Iodobenzoic acid; Downstream Products: Methyl 3-ethoxybenzoate, 4-Chloro-3-hydroxybenzoic acid, 2-chloro-3-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. "3-Hydroxybenzoic acid (CAS 99-06-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32710-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.