Item

Index

Loss on drying

%

10.0-13.3

Arsenic

ppm≤

3

Limit of fluoride

%≤

0.003

Lead

ppm≤

0.2

Heavy Metals

ppm≤

20

 Acid insoluble substance   

%≤

0.2

Assay Ca3(C6H5O7)2

%

97.5-100.5

Ca    Assay Ca

%≥

21

On 20Mesh(usp)

0%

20-80 Mesh

%≥

70

Under 80 mesh

%≤

20