3,4-Dihydroxybenzoic Acid

3,4-dihydroxybenzoic acid is a kind of phenolic acid which naturally exists in many fruits and vegetables, and is also an effective active ingredient in many Traditional Chinese medicines such as hibiscus and salvia miltiorrhiza. It is water-soluble. 3,4-dihydroxybenzoic acid can play a variety of biological activities in medicine, feed and other industries, such as anti-inflammatory, antiviral, antioxidant, nerve protection, chemical protection, etc.


Properties: white powder, discoloration occurs when exposed to air; It breaks down and releases carbon dioxide in boiling water; Easy to be oxidized in alkaline medium; Aqueous solutions of 3,4-dihydroxybenzoic acid turn green on ferric chloride and red on sodium bicarbonate

Solubility: soluble in ethanol, ether, propylene glycol, glycerol and certain water, insoluble in oil, benzene

Basic Information

Product Name: 3,4-dihydroxybenzoic Acid

Aliases: protocatechuic acid; Catechol 4-carboxylic acid

CAS NO. : 99-50-3

EINECS NO.: 202-760-0

Molecular formula: C7H6O4

Molecular weight: 154.12

Origin: Hangzhou, Zhejiang Province, China

Brand: Viablife

Item NO.: VBL – NP – 004

Content: 99%

Sources: Leaf of Stenoloma chusanum(L.)Ching, leaf of Ilex Chi-nensis Sims, etc., e.g. Acanthopanax sessiliflora, Orientin, Phylloorientale, etc

Melting point: 197-200℃

Boiling point: 410.7℃

Flash: 216.3℃

Density: 1.54 g/cm3

Steam pressure: 1.75E-07mmHg at 25℃

Solubility (water) : 1.24g /100 mL



Uses: used as pharmaceutical intermediates and organic synthetic raw materials


Specifications Sheet

Specification: 25KG/ barrel


Shipping & Storage

Storage method: Store in a cool, dry and dark environment, keep away from fire and heat source, and store separately with oxidizer and strong alkali

Safety information

Dangerous goods mark: Xi

Danger Class Code: 36/37/38

Safety Instructions: 26-36-37/39

WGK Germany: 3

RTECS number: UL0560000

Customs Code: 2918290000

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