Tetrachlorophthalic Anhydride

CAS NO:117-08-8
Molecular formula: C8CL4O3
Molecular weight:285.9 
Description:
Specification:
Appearance: White crystal or powder 
Content,GC: 99.0% min. 
Main inpurity: 0.5% max. 
Melting point: 255-257 degree C
Loss of drying: 0.5% min. 
APHA color: 50# max. 
Free acid: 0.1% max.
Free chlorine : 10PPM max. 
Hexachlorobenzene: 0.1% max. 
Iorn: 10PPM max. 
Insoluble matter in alkali: 0.5% max. 
Solubility in dimethyl benzene, 4.7g/100ml: All 
Applications: used to pharmaceutics pesticides, dyestuff production.