Chemical name: Activated natural calcium carbonate

Molecular formula: CaCO₃

Property: White fine powder, particle surface is covered by active substances, more easily dispersed in organic matter than ordinary heavy or light calcium carbonate without active treatment, better lipophilic, fully miscible in organic materials. Ultra-fine activated ground calcium carbonate is an important filling material for plastics, rubber and coating industries. It can reduce cost, improve processing and improve quality performance. It can be used for thermoplastic plastics such as polyvinyl chloride and polyolefin, and for synthetic resin adhesives such as vinyl acetate to improve fluidity, shrinkage and curing speed.  

Item	Index
	GR3000	GR2500	GR2000	GR1500
Calcium carbonate % ≥	96	96	95	95
Iron oxide % ≤	0.2	0.2	0.2	0.2
Silicon dioxide % ≤	0.3	0.3	0.3	0.3
PH Value >	8-10	8-10	8-10	8-10
Volatile matter at 105℃ % ≤	0.35	0.35	0.4	0.4
True specific gravity	2.7	2.7	2.7	2.7
Apparent specific gravity	0.35	0.38	0.43	0.51
Oil absorption g/100g ≤	28	25	24	22
Particle size: D50μm D97μm	3.5	4.5	5.5	6.5
	7.0	9.0	11.0	12
Whiteness ≥	95	95	94	94

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