CAS Number: 69-72-7

EINECS NO.: 200-712-3

FEMA:2288

InChI: 1S/C7H6O3/c8-6-4-2-1-3-5(6)7(9)10/h1-4,8H,(H,9,10)

Synonyms: 2-Hydroxybenzoic acid

Molecular Formula: C₇H₆O₃

Molecular Weight: 138.12

Physical and Chemical Properties:White crystal or crystal powders,and sweets first and then hot,no chemical changes in the air.Atmospherically sublimation temperature over 76oC.Easily to decarboxylate and change into phenol and dioxide when heated atmospherically,and its aqueous solution appears acid reaction,becomes purple with FeCL3.Slightly dissolves in water but dissolves in boiling water easily.Dissolves in the ethanol or ether and slightly soluble in chloroform.

Melting point: 158-161ºC

Boiling point: 211ºC(20MMHG)

Water solubility: 1.8G/L(20ºC)

Flash point:157ºC

Density:1.44