2,3-Dihydroxybenzoic acid

2,3-二羟基苯甲酸

Also known as: Pyrocatechuic acid, o-Pyrocatechuic acid, Catechol-3-carboxylic acid, Pyrocatechol-3-carboxylic acid, 2,3-Dihydroxybenzoate, 3-Hydroxysalicylic acid, Benzoic acid, 2,3-dihydroxy-

CAS No.
303-38-8
Jingsj CID
J-44851-2
Molecular Formula
C7H6O4
Chinese Name
2,3-二羟基苯甲酸
Molecular Weight
154.120 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point204-206 °C(lit.)
Boiling Point362.5±32.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point187.2±21.6 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 2,3-Dihydroxybenzoic acid?

303-38-8

What are the molecular formula and molecular weight of 2,3-Dihydroxybenzoic acid?

C7H6O4, molecular weight 154.120 g/mol

Is 2,3-Dihydroxybenzoic acid hazardous?

Warning

Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026