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 as filler in rubber and edge banding. The purpose of filling is to improve processing and reduce costs. Packing: Composite plastic woven bag 25KG/bag  

Index Item	CCR800	CCR802
Calcium carbonate content (%)	≥ 95.0	≥ 95.0
Average primary Particle size (nm)	100-150	90-120
Magnesium carbonate content (%)	<2.5	<2.5
Crystal form	cube, prism	cube, prism
Specific surface area (m2/g)	≥ 16	≥ 18
Oil absorption value g/100g	<28	<30
Moisture (%)	<0.4	<0.4
pH (HP)	8.5~10.5	8.5~10.5
Whiteness ≥(%)	96	96.5
Activation ( %)	97	99
Content of insoluble substances in hydrochloric acid % ≤	<0.3	<0.3
Surface treatment agent	Stearic acid + special agent	Stearic acid + special agent

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