Light calcium carbonate

Chemical Formula: CaCO3

CAS No.:471-34-1

Properties: White powder, odorless, tasteless, non-toxic, light weight, stable in the air, slight moisture absorption

Application

Widely applied in Industries such as rubber, plastics, papermaking, paint, building toothpaste etc.

Rubber industry: Calcium carbonate is the earliest filler used in rubber industry. It can increase the volume for saving cost. It also can improve the processing performance and the vulcanizing properties.

Plastic industry: improve the stability of plastic product size, improve the plastic processing performance and product heat resistance.

Papermaking: As paper filler, it not only reduce the pulp for saving cost, and helps in sizing of paper at neutral and alkaline PH.

Product Data

Limestone precipitation light calcium carbonate index
Precipitated light calcium carbonate Index Item		HG/T 2226-2010
		Rubber and plastics		Coatings		Papermaking
		Top grade	First grade	Top grade	First grade	Top grade	First grade
Calcium carbonate (CaCO 3 ) % ≥		98	97	98	97	98	97
PH value		9-10	9-10.5	9-10	9-10.5	9-10	9-10.5
Volatile at 105 °C% ≤		0.4	0.5	0.4	0.6	1.0
Insolubles in hydrochloric acid% ≤		0.1	0.2	0.1	0.2	0.1	0.2
Sediment Volume ml/g ≥		2.8	2.4	2.8	2.6	2.8	2.6
Iron (Fe)% ≤		0.05	0.08	0.05	0.08	0.05	0.08
Manganese (Mn)% ≤		0.005	0.008	0.006	0.008	0.006	0.008
Sieve residue	125μm test sieve % ≤	Passed	0.005	Passed	0.005	Passed	0.005
Sieve residue	45μm test sieve % ≤	0.2	0.4	0.2	0.4	0.2	0.4
Whiteness ≥		94	92	95	93	94	92
Oil absorption (g/100)≤		80	100	--	--	--	--
Black point ≤		5

PRODUCT

Light calcium carbonate

NAVIGATION

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