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3,5-Dihydroxybenzoic acid

Also known as: alpha-Resorcylic acid, 5-carboxyresorcinol, resorcinol-5-carboxylic acid, 3,5-dihydroxybenzoate

3,5-Dihydroxybenzoic acid (CAS 99-10-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H6O4 and a molecular weight of 154.120 g/mol. Key properties include a melting point of 236-238 °C (dec.)(lit.), a boiling point of 411.5±15.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 216.8±16.9 °C. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.

CAS No.
99-10-5
Jingsj CID
J-32708-2
Molecular Formula
C7H6O4
Molecular Weight
154.120 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Melting Point236-238 °C (dec.)(lit.)
Boiling Point411.5±15.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point216.8±16.9 °C
Exact Mass154.026611
PSA77.76000
LogP1.12
Vapor Pressure0.0±1.0 mmHg at 25°C
Refractive Index1.671
Additional Property84 g/L (20 ºC)

Activity & Biological Data

TargetHuman Endogenous Metabolite

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 3,5-Dihydroxybenzoic acid?

The CAS number of 3,5-Dihydroxybenzoic acid is 99-10-5.

What are the molecular formula and molecular weight of 3,5-Dihydroxybenzoic acid?

3,5-Dihydroxybenzoic acid has molecular formula C7H6O4 and molecular weight 154.120 g/mol.

Which suppliers offer 3,5-Dihydroxybenzoic acid?

1 supplier(s) listed; request a quote for pricing.

What are the upstream and downstream products of 3,5-Dihydroxybenzoic acid?

For 3,5-Dihydroxybenzoic acid, Upstream Products: Resveratrol, 3,5-Dimethoxybenzoic acid, Resorcinol; Downstream Products: Methyl 2,4-dimethoxybenzoate, Methyl 2-methoxybenzoate, Methyl 3-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. "3,5-Dihydroxybenzoic acid (CAS 99-10-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32708-2 (accessed 2026-11-09).

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