Carbonato Calcico

Specifications of Food Grade:
Chemical Properties

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 asMgO 0.04% Max.
Flouride as F 20 ppm Max.

Physical Properties

Whiteness 96 Min.
Crystal Structure Argonite
Water Absorption 50 to 55 ml/100 gm
Oil Absorption 30 to 35 ml/100 gm
Losson 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.






SpecificationsLight Paper of Grade:
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 alkalias 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 at105o 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.






Specifications of Paint Grade: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...