Products

 

Superfine Ground Calcium Carbonate

 

Chemical name: Natural Calcium carbonate

Molecular formula: CaCO₃

Properties:White fine powder, colorless, tasteless. The distribution range of Particle size is narrow, high Whiteness, low Oil absorption.
Uses: Widely used in all kinds of high-grade coatings, paint, ink, sealant, paper industry, etc..

Packing: Composite plastic woven bag, 25KG/bag

 

Index Item	Internal control Index
	GR-616	GR-615	GR-611
Calcium carbonateCaCO3 %≥	98.0	98.0	98.0
Silica SiO2 %≤	0.3	0.3	0.3
Specific surface area cm3/g	20000	18000	16000
D50Particle size μm	1.50	2.00	2.50
D97Particle size μm	3.0	4.0	5.0
Fe %≤	0.02	0.02	0.02
True specific gravity t/m3	2.7	2.7	2.7
Apparent specific gravity t/m3	0.50	0.60	0.70
Oil absorption    ml/100g	30	28	26
Insoluble matter in hydrochloric acid %≤	0.2	0.2	0.2
PH value	8-9	8-9.5	8-10
Moisture% ≤	0.3	0.3	0.3
Whiteness ≥	96	96	95.5