FOOD GRADE:
Precipitated Calcium Carbonate is used by the chewing gum, powder drinks and wine manufacturers.
The chewing gum manufacturers uses it as a calcium supplement as a mold release material where as powder drinks manufacturers uses it to neutralize excess acid in the food. The Wine manufacturers use Precipitated Calcium Carbonate as a filtration aid. Precipitated Calcium Carbonate increases the nutrition ingredient and puff in food and makes them taste better. For use in the food industry, the heavy metals like Pb, As, Hg, Fe etc. should be controlled below prescribed standards. It is also used as a source of calcium supplement in backing products.
Specifications of
Food Grade:
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Chemical Properties |
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CaCO3 % by
Weight |
99.5 ± 0.25 |
|
Lead as pb |
2
ppm Max. |
|
Copper as Cu |
2 ppm Max. |
|
Arsenic as As |
10 ppm Max. |
|
Sulphate as SO4 |
0.2% Max. |
|
Soluble alkali as Na2O |
0.35% Max. |
|
Silica as SiO2 |
125 ppm Max. |
|
Iron as Fe |
20 ppm Max. |
|
Matter insoluble in HCL |
0.003% Max. |
|
pH |
9.5 ± 0.5 |
|
Phosphate |
100
ppm Max. |
|
Chloride as Cl
|
20 ppm Max. |
|
Magnesium as MgO |
0.04% Max. |
|
Flouride as F |
20 ppm Max. |
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Physical Properties |
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Whiteness |
96 Min. |
|
Crystal Structure |
Argonite |
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Water Absorption |
50 to 55 ml/100 gm |
|
Oil Absorption |
30 to 35 ml/100 gm |
|
Loss on Drying at 105o
C |
0.5% Max. |
|
Specific Gravity |
2.6 to 2.9 |
|
Bulk Density |
0.60 to 0.70 gm/ml |
|
Average Particle Size |
6 to 8
μm |
|
Residue on 300 mess |
0.2% Max. |
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