Chemical Name: Calcium Carbonate Molecular formula: CCR Property: White fine powder, particle surface covered by active substance, high dispersibility for organic polymers. Uses: Nano active calcium carbonate is used as filler in silicone rubber and adhesive. The purpose of filling is to improve processing and reduce costs. Packing: Composite plastic woven bag, 25KG/bag  

Index Item	CCR900	CCR902
Calcium carbonate content (%)	≥ 95.0	≥ 95.0
Average primary Particle size (nm)	<90	<60
Magnesium carbonate content (%)	<2.0	<2.0
crystal form	cube	cube
Specific surface area (m2/g)	≥ 22	≥ 28
Oil absorption value g/100g	<30	<30
Moisture (%)	<0.3	<0.3
pH (HP)	8.5~10	8.5~10.5
Whiteness ≥(%)	96.5	96.5
Activation ( %)	99	99
Content of insoluble substances in hydrochloric acid % ≤	<0.3	<0.3
surface treatment agent	composite modifier	composite modifier

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