Synonyms:

1,2-Dihydroxybenzene-4-carboxylic Acid;NSC 16631;Protocatechoic Acid;Catechol-4-carboxylic Acid
Protocatechuic Acid
Pyrocatechol-4-carboxylic Acid;CATECHOL-4-CARBOXYLIC ACID;3,4-DIHYDROXYBENZOIC ACID;3,4-DIHYDROXYBENZOIC ACID N-HYDRATE;3,4-DIHYDROBENZOIC ACID

HS Code: 29182990

Density:1.54

Boiling Point:237.46°C(roughestimate)

Refractive Index:1.6400(estimate)

Melting Point: 197-200 °C(dec.)(lit.)

Storage: Storebelow+30°C.

PKA: 4.48(at25℃)

Appearance: FineCrystallinePowder

Hazard Codes: Xi

Risk Statements:  36/37/38

Safety Statements: 26-36-37/39

WGK Germany: 3