Calcium Carbonate

General description: Calcium carbonate, or CaCO₃, comprises more than 4% of the earth’s crust and is found throughout the world. Its most common natural forms are chalk, limestone, and marble, produced by the sedimentation of the shells of small fossilized snails, shellfish, and coral over millions of years.

Application: The main applications of calcium carbonate are in building materials, ceramic tiles, blackboard chalk, iron ore purification, oil well drilling fluids, paints, adhesives, and sealants. It also has several medical uses such as antacid, calcium dietary supplement, pharmaceutical filler in tablets, and hemodialysis treatment. It is also used as a food preservative and in toothpastes.

Catalogue Number: i880048

Technical Information
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Technical Information

Precipitated chalk, Aragonite, Agstone, Bell mine pulverized limestone, Calcite	Synonym
471-34-1	CAS-No
207-439-9	EC-No
CaCO3	Linear Formula
White powder	Appearance
0.014 g/l (20ºC)	Solub. in H2O
9.5-10.5 (100g/l, H2O, 20ºC) (slurry)	pH value
100.09 g/mol	Molecular Weight
825ºC (decomposition)	Melting point
2.93 g/cm3	Spec. density
400-1400 Kg/m3	Bulk. Density
2836-50-00	HS-No
Eye irritation, Skin irritation, H315, H320, H335, P261, P261, P264, P271, P280, P302 + P352, P305 + P351 + P338, P312, P332 + P313, P337 +P313, P362 + P364, P403 + P233, P405, P501. LGK 10 - 13	GHS
Keep container tightly closed in a dry and well-ventilated place	Storage Conditions
99.0%	Assay
≤0.03%	Iron (Fe)
≤0.02%	Chloride (Cl)
≤0.02%	Sulfate (SO4)