4-Fluoro-2-hydroxybenzoic acid
Also known as: 2-Hydroxy-4-fluorobenzoic acid, 4-Fluorosalicylic acid, 4-Fluorosalicyclic acid, Benzoic acid, 4-fluoro-2-hydroxy-, RARECHEM AL BE 1428, NSC 109099
4-Fluoro-2-hydroxybenzoic acid (CAS 345-29-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H5FO3 and a molecular weight of 156.11 g/mol. Key properties include a melting point of 170 °C (dec.)(lit.), a boiling point of 300.5±27.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 135.6±23.7 °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.
- 345-29-9
- Jingsj CID
- J-43244-0
- Molecular Formula
- C7H5FO3
- Molecular Weight
- 156.11 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 170 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 300.5±27.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 135.6±23.7 °C |
| Exact Mass | 156.022278 |
| PSA | 57.53000 |
| LogP | 2.63 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.585 |
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-Fluoro-2-hydroxybenzoic acid?
The CAS number of 4-Fluoro-2-hydroxybenzoic acid is 345-29-9.
What are the molecular formula and molecular weight of 4-Fluoro-2-hydroxybenzoic acid?
4-Fluoro-2-hydroxybenzoic acid has molecular formula C7H5FO3 and molecular weight 156.11 g/mol.
Is 4-Fluoro-2-hydroxybenzoic acid hazardous?
4-Fluoro-2-hydroxybenzoic 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 4-Fluoro-2-hydroxybenzoic acid?
For 4-Fluoro-2-hydroxybenzoic acid, Upstream Products: 4-Fluorobenzoic acid, 3-Fluorophenol, 2,4-Difluorobenzoic acid; Downstream Products: Methyl 4-fluoro-2-hydroxybenzoate, Ethyl 2-Hydroxy-4-fluorobenzoate, Methyl 4-fluoro-2-methoxybenzoate.
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-Fluoro-2-hydroxybenzoic acid (CAS 345-29-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43244-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.