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Ground Calcium Carbonate

 

Chemical name: Ground Calcium Carbonate

Molecular formula: CaCO₃

Properties: Odorless and tasteless white powder, stable in air, hardly absorb water, almost insoluble in water and alcohol, slightly soluble in water with ammonium salt and carbon dioxide, soluble in acidic aqueous water..

Uses: round calcium carbonate is mainly used as filler, and used in plastics, coatings, rubber, daily chemical products and building industry, etc.

Packing: Composite plastic woven bag, 25KG/bag      

            

Index Item		Internal control Index
		GR-605	GR-606	GR-608	GR-609	GR-610
Calcium carbonate(CaCO3)% ≥		98	98.8	98.8	98.8	98.8
Ferric oxide (Fe2O3)% ≤		0.02	0.02	0.02	0.02	0.02
Silica (SiO2)% ≤		0.3	0.3	0.3	0.3	0.3
Particle size	D50(μm)	4	3	2.5	1.5	1
	D97(μm)	10	8.5	6.5	5	4.5
Residue on sieve of 325mesh%		0.05	0.001	--	--	--
Whiteness % ≥		95	95	96	96	96
Moisture% ≤		0.3	0.3	0.3	0.3	0.3
Loss on ignition (LOS)%		43.5	43.5	43.5	43.5	43.5
True specific gravity		2.7	2.7	2.7	2.7	2.7
Apparent specific gravity		0.8~1.35
PH value		9±0.5