English name: 3,4-Dihydroxybenzoic acid; Protocatechuic acid; Catechol-4-carboxylic acid
Other names: Protocatechuic acid
CAS number: 99-50-3
C7H6O4 = 154.12
Level: CP
Content: ≥97.0%
Melting point: 199 ～ 203 ℃ (2 ℃)
Ethanol dissolution test: qualified
Residue on ignition: ≤0.1%
Properties: white to light brown needle crystal or powder. Discoloration in exposed air. Soluble in ethanol and ether, soluble in 50 parts of water, insoluble in benzene. The aqueous solution is green when it is ferric chloride and dark red when it is sodium bicarbonate. The relative density is 1.54. Melting point is about 200 ° C (decomposition). There are irritating uses: biochemical research. Certification iron.
Save: RT, protect from light
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