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ProductsLight calcium carbonate
Chemical name: Calcium carbonate
Molecular formula: CaCO3
White powder, non-toxic, light weight, stable in air, slightly hygroscopic.
Uses: Precipitated calcium carbonate is the most widely used inorganic pigment, widely used in rubber, paper, plastics, adhesives, coatings, inks, daily necessities, cosmetics and feed.
Packing: Composite plastic woven bag, 25KG/bag
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Index Item |
HG/T 2226-2010 |
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Rubber and plastics |
Coating |
Papermaking |
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Top grade |
First grade |
Top grade |
First grade |
Top grade |
First grade |
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CaCO3 % ≥ |
98 |
97 |
98 |
97 |
98 |
97 |
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PH Value > |
9-10 |
9-10.5 |
9-10 |
9-10.5 |
9-10 |
9-10.5 |
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Volatile content at 105°C % ≤ |
0.4 |
0.5 |
0.4 |
0.6 |
1.0 |
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Content of insoluble substances in hydrochloric acid % ≤ |
0.1 |
0.2 |
0.1 |
0.2 |
0.1 |
0.2 |
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Sedimentation volume ml/g ≥ |
2.8 |
2.4 |
2.8 |
2.6 |
2.8 |
2.6 |
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Iron (F) % ≤ |
0.05 |
0.08 |
0.05 |
0.08 |
0.05 |
0.08 |
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(Mn)% ≤ |
0.005 |
0.008 |
0.006 |
0.008 |
0.006 |
0.008 |
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Residue on sieve |
125μm test sieve % ≤ |
All Pass |
0.005 |
All Pass |
0.005 |
All Pass |
0.005 |
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45μm test sieve % ≤ |
0.2 |
0.4 |
0.2 |
0.4 |
0.2 |
0.4 |
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Whiteness ≥ |
94 |
92 |
95 |
93 |
94 |
92 |
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Oil absorption value (g/100) ≤ |
80 |
100 |
-- |
-- |
-- |
-- |
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Black dot ≤ |
5 |
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