Pharmaceutical Industries use precipitated Calcium Carbonate in the fermentation process and to manufacture tapped density tablet making.

Pharmaceutical Grade Precipitated Calcium Carbonate contains high content of CaCO3 and very low impurities like Pb, As, Hg, Fe etc. It is used to neutralize the acids in fermentation process and for calcium supplement tablets. Granulated Precipitated Calcium Carbonate makes it easier to shape calcium tablets.

Chemical Properties
CaCO3 % by Weight 98.25 ± 0.25
Lead as pb 10 ppm Max.
Copper as Cu 2 ppm Max.
Arsenic as As 2 ppm Max.
Sulphate as SO4 0.4% Max.
Soluble alkali as Na2O 0.25% Max.
Silica as SiO2 0.5% Max.
Iron as Fe 250 ppm Max.
Matter insoluble in HCL 0.5% Max.
pH 9.5 ± 0.5
Phosphate 20 ppm Max.
Chloride as Cl 20 ppm Max.
Magnesium as MgO 0.5% Max.
Flouride as F 20 ppm Max.
Physical Properties
Whiteness 95 Min.
Crystal Structure Argonite
Water Absorption 80 to 85 ml/100 gm
Oil Absorption 60 to 65 ml/100 gm
Loss on Drying at 105o C 0.5% Max.
Specific Gravity 2.6 to 2.9
Bulk Density 0.40 to 0.45 gm/ml
Average Particle Size 5 to 7 μm
Residue on 300 mess 0.2% Max.