White/Grey powder
CaCO3 97. 60% min
PH 8.0-10.0
Loss on drying: 1. 0% max
Acid-insoluble substances: 0.3% max
Barium: 0.03% max
Arsenic: 3ppm max
Heavy metals: 10ppm max
Cadmium: 0.2ppm max
Fineness: through 180 mesh 99.8% min
Total Aerobic 1000units/g max
Standard: USP 29
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