4-Hydroxy-2-methylbenzoic acid
Also known as: 4,2-Cresotic acid, 4-Hydroxy-o-toluic acid, Benzoic acid, 4-hydroxy-2-methyl-, 4-Hydroxy-2-methylbenzoic acid
4-Hydroxy-2-methylbenzoic acid (CAS 578-39-2) 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 177-181ºC, a boiling point of 339.1±30.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 173.1±21.1 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 578-39-2
- Jingsj CID
- J-1423516-6
- 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 | 177-181ºC |
|---|---|
| Boiling Point | 339.1±30.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 173.1±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
- H318 — Causes serious eye damage
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-2-methylbenzoic acid?
The CAS number of 4-Hydroxy-2-methylbenzoic acid is 578-39-2.
What are the molecular formula and molecular weight of 4-Hydroxy-2-methylbenzoic acid?
4-Hydroxy-2-methylbenzoic acid has molecular formula C8H8O3 and molecular weight 152.147 g/mol.
Is 4-Hydroxy-2-methylbenzoic acid hazardous?
4-Hydroxy-2-methylbenzoic acid has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H318 — Causes serious eye damage.
What are the upstream and downstream products of 4-Hydroxy-2-methylbenzoic acid?
For 4-Hydroxy-2-methylbenzoic acid, Upstream Products: 4-Methoxy-2-methylbenzoic acid, Carbon tetrachloride, m-Cresol; Downstream Products: Methyl 4-methoxy-2-methylbenzoate, Benzamide, m-Cresol.
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-2-methylbenzoic acid (CAS 578-39-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1423516-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.