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4-Hydroxy-3,5-dimethylbenzoic acid

Also known as: 3,5-Dimethyl-4-hydroxybenzoic acid, 2,6-Dimethyl-4-carboxyphenol, 2,6-Xylenol-4-carboxylic acid, 4-Hydroxymesitylenic acid, Benzoic acid, 4-hydroxy-3,5-dimethyl-

4-Hydroxy-3,5-dimethylbenzoic acid (CAS 4919-37-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H10O3 and a molecular weight of 166.174 g/mol. Key properties include a melting point of 221-226 °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. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4919-37-3
Jingsj CID
J-9621-9
Molecular Formula
C9H10O3
Molecular Weight
166.174 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point221-226 °C
Boiling Point331.3±30.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point168.4±21.1 °C
Exact Mass166.062988
PSA57.53000
LogP2.34
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.588

Customs & Trade Information

HS Code2918290000
SummaryHS: 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-3,5-dimethylbenzoic acid?

The CAS number of 4-Hydroxy-3,5-dimethylbenzoic acid is 4919-37-3.

What are the molecular formula and molecular weight of 4-Hydroxy-3,5-dimethylbenzoic acid?

4-Hydroxy-3,5-dimethylbenzoic acid has molecular formula C9H10O3 and molecular weight 166.174 g/mol.

What are the upstream and downstream products of 4-Hydroxy-3,5-dimethylbenzoic acid?

For 4-Hydroxy-3,5-dimethylbenzoic acid, Upstream Products: Carbon dioxide, 2,6-Dimethyl-4-iodophenol, 3,5-Dimethyl-4-methoxybenzoic acid; Downstream Products: 4-Hydroxy-3,5-dimethylbenzyl alcohol, 2,6-Dimethylphenol, Carbon dioxide.

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-3,5-dimethylbenzoic acid (CAS 4919-37-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-9621-9 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.