Name of index	FCC-V
Assay(On the lgnhed basls), %	> =98.0
Arsenlc, %	=0.0003
Leed, %	=0.005
Fluoride, %	=0.2
Insoluble subslances, %	=0.0004
Loss on lgnition Anhydrous %	=5.01
Decahydrate %	=18.0~22