Chemical name: Calcium carbonate

Molecular Formula: CaCO₃

Properties: fine particle size of light calcium carbonate, white powder, odorless, average Particle size in the range of 0.1-0.3μm, large specific surface area. Ultra-fine (active) light calcium carbonate is finer and more uniform than ordinary light calcium carbonate. It is often used as additive of emulsion and pulp. Ultra-fine active light calcium carbonate is widely used in rubber resin, coating, ink, cosmetics and other industries.

Packing: Composite plastic woven bag, 25KG/bag
 

Index Item	HG/T 2776-2010
	Fine precipitated calcium carbonate		Fine active precipitated calcium carbonate
	Top grade	First grade	Top grade	First grade
Calcium carbonate (CaCO3) % ≥	98	97	95.0	94.0
PH value	8-10	8-10	8-10	8-10
Volatile content at 105°C % ≤	0.4	0.6	0.3	0.5
Content of insoluble substances in hydrochloric acid % ≤	0.1	0.2	0.1	0.2
Iron (F) % ≤	0.05	0.08	0.05	0.08
Whiteness ≥	94	92	94	92
Oil absorption value/(g/100g) ≤	100		70
Black spot/(piece/g) ≤	5
Bulk density (g/cm3)	0.3-0.5
Specific surface area/(m2/g) ≥	12	6	12	6
Average Particle size	0.1-1.0	1.0-3.0	0.1-1.0	1.0-3.0

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