Amisulpride intermediate

[Chemical Name]: 4-Amino-2-hydroxy-benzoic acid

[Synonyms]: 4-Aminosalicylic acid

[Structure]:

[Formula]: C7H7NO3

[Molecular Weight]: 153.14

[CAS RN]: 65-49-6

[Density]: 1.491 g/ cm3

[Melting Point]: 135-145 ℃(lit.)

[Flash Point]: 184.1 ℃

[Solubility(in water)]: 2 g/L (20 ℃ )

[Specification]:

Appearance Almost white or slightly yellow crystalline powder
Moisture 0.5%max
pH 3.0-3.7
Heavy metals 30ppm max
m-Aminophenol 0.25%max
Chloride 0.042%max
Residue on ignition 0.2%max
Assay 99.0%min