Calcium Carbonate

Chemical Name: Calcium Carbonate (Light)
Molecular Formula: CaCO₃
Molecular Weight: 100.09
CAS No. : 471-34-1
Standard Executed: HG/T 2226-2019

Appearance
White or off-white powder.

Application
• Usually used as filler, it is widely used in artificial floor tiles, rubber, plastics, papermaking, coatings, paints, inks, cables, building supplies, food, medicine, textiles, feed, toothpaste and other daily-use chemical industries;
• It is also used in organic synthesis, metallurgy, glass and asbestos production.

Packing
• Net weight : 25kg;
• PP woven bags, with inner PE plastic bags.

Specification

Item		Standard
		Rubber grade	Coating grade	Paper grade	Plastic grade
Calcium carbonate (CaCO₃) ω/% ≥		97.0	97.0	97.0	97.0
PH (10% suspended solids)		9.0-10.5	9.0-10.5	9.0-10.5	9.0-10.5
105°C volatiles ω/% ≤		0.5	0.6	1.0	0.5
Hydrochloric acid insoluble matter ω/%≤		0.20	0.20	0.20	0.20
Sedimentation volume/(mL/g) ≥		2.6	2.8	2.6	2.4
Manganese (Mn) ω/% ≤		0.008	0.008	0.008	0.008
Iron (Fe) ω/% ≤		0.08	0.08	0.08	0.08
Fineness (sieve residue) ω/% ≤	125μm	0.005	0.005	0.005	0.005
	45μm	0.4	0.4	0.4	0.4
whiteness ≥		92.0	93.0	93.0	92.0
Oil absorption value/(g/100g) ≤		80	---	---	80
Black spot/(g/pc) ≤		5
Lead (Pb)/ω/% ≤		0.0010
Chromium (Cr)/ω/% ≤		0.0005
Mercury (Hg)/ω/% ≤		0.0002
Cadmium (Cd)/ω/% ≤		0.0002
Arsenic (As)/ω/% ≤		0.0003

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