Appearance:Gray Powder

CAS NO.:3562-99-0

Molecular formula:C14H12O3

Identification:A.infrared spectrum should comfom

               B.should conform

LEAD:≤300ppm

Melting Point:177°-179°C

Chloride:≤70ppm

Lose on drying:≤0.5%

Heavy metals:≤20ppm

Assay (Dry base):98.0%-100.0%