4-Hydroxy-3-methylbenzoic acid
Also known as: 3-Methyl-4-hydroxybenzoic acid, 4-Hydroxy-m-toluic acid, 4-Carboxy-o-cresol, Benzoic acid, 4-hydroxy-3-methyl-, 4-HYDROXY-3-METHYLBENZOIC ACID hemihydrate, 4-Hydroxy-3-methylbenzoic acid hydrate, AKOS BBS-00004298, EINECS 207-890-1, MFCD00270105
4-Hydroxy-3-methylbenzoic acid (CAS 499-76-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H8O3 and a molecular weight of 152.147 g/mol. Key properties include a melting point of 173-177 °C, a boiling point of 331.3±30.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 168.4±21.1 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 499-76-3
- Jingsj CID
- J-900114-3
- Molecular Formula
- C8H8O3
- Molecular Weight
- 152.147 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 173-177 °C |
|---|---|
| Boiling Point | 331.3±30.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 168.4±21.1 °C |
| Exact Mass | 152.047348 |
| PSA | 57.53000 |
| LogP | 1.88 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.600 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H318 — Causes serious eye damage
- H335 — May cause respiratory irritation
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|---|
| Additional Information | [1]. Chapman PJ, et al. The bacterial metabolism of 2,4-xylenol. Biochem J. 1968 Dec;110(3):491-8. |
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-methylbenzoic acid?
The CAS number of 4-Hydroxy-3-methylbenzoic acid is 499-76-3.
What are the molecular formula and molecular weight of 4-Hydroxy-3-methylbenzoic acid?
4-Hydroxy-3-methylbenzoic acid has molecular formula C8H8O3 and molecular weight 152.147 g/mol.
Is 4-Hydroxy-3-methylbenzoic acid hazardous?
4-Hydroxy-3-methylbenzoic acid has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H318 — Causes serious eye damage.
What are the upstream and downstream products of 4-Hydroxy-3-methylbenzoic acid?
For 4-Hydroxy-3-methylbenzoic acid, Upstream Products: Carbon tetrachloride, o-Cresol, 4-Methoxy-3-methylbenzoic acid; Downstream Products: Methyl 4-hydroxy-3-methylbenzoate, methyl 4-methoxy-3-methylbenzoate, 2-Bromo-6-methylphenol.
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-methylbenzoic acid (CAS 499-76-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-900114-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.