Calcium Carbonate (Heavy)

• CAS No.: 71-34-1
• Formula: CaCO3
• EINECS: 207-439-9
• Certification: HACCP, BRC
• Shelf Life: >12 Months
• Resource: Natural
• Model NO.: FCC/USP
• Transport Package: Plastic Bags
• Specification: 25KG/bag
• Trademark: Dongtai
• Origin: China
• Production Capacity: 20000metric Tons/Year

Product Description

Calcium Carbonate(heavy)
1. Chemical name: Calcium carbonate (heavy)
2. M. F: CaCO
3. M.W: 100.09
4. Physical properties:
White solid, tasteless, odourless.Presence of stereotypes and crystallization type two forms.Can be divided into the orthorhombic system and the crystal type of hexagonal system, show columnar or lozenge.Relative density 2.71.825 ~ 896.6 ºC decomposition, at about 825 ºC is decomposed into calcium oxide and carbon dioxide.Melting point 1339 ºC, melting point is 1289 ºC under 10.7 MPa.Poorly soluble in water and alcohol.Soluble in dilute acid, emit carbon dioxide at the same time, the exothermic reaction.Soluble in ammonium chloride solution, too.Almost insoluble in water.Aragonite, relative density 2.83, melting point 825 ºC (decomposition).
5.Standard:

Item name	FCC	USP
Appearance	A fine,white or colorless,Granular	A fine,white or colorless,Granular
Identification	Pass test	Pass test
Assay	98.0%-100.5%	98.0%-100.5%
Acid-insoluble substances	≤0.2%	≤0.2%
Arsenic	≤3ppm	≤3ppm
Fluoride	≤0.005%	≤0.005%
Lead	≤3ppm	≤3ppm
Loss on drying	≤2%	≤2%
Magnesium and alkali salts	≤1%	≤1%
Mercury	-	≤0.00005%
Barium	-	Does not impart a green dolor
Iron	-	≤0.1%

6. Usage: Laboratory use
Can also be used for preparing carbon dioxide in the laboratory
Verification and determination of the halogen organic combination reaction.Water analysis.Verification of phosphorus.Decomposition of silicate with ammonium chloride.Preparation of calcium chloride solution with standardized soap.Manufacturing optical neodymium glass raw materials, coating materials.
Other USES
Can be used as additive in food industry.
They can be used for construction and paper industry.
Less than 200 mesh: can be used for all kinds of feed additive quantity reach more than 55.6 without harmful ingredients.
250 mesh to 300 mesh, used for plastics, rubber factory, paint factory, the factory of the raw materials and external painting.Whiteness is more than 85 degrees.
350 mesh to 400 mesh: used in the manufacture of gusset plate, water pipe, chemical industry.Whiteness is more than 93 degrees.
400 mesh to 600 mesh: paste can be used in toothpaste, soap.Whiteness is more than 94 degrees
800 mesh: used in rubber, plastic, cable, PVC white degree above 94 degrees
1250 mesh, PVC, PE, paint, coating products, paper coating, paper surface coating, white degree above 95 degrees.High purity, high whiteness, non-toxic, odourless, low oil, low hardness.
Calcium carbonate as a calcium supplement: absorption rate can reach 39%, second only to a calcium acid soluble in acid, has become the most formulations, application the most calcium supplement.

7. Packing: In 25kg composite woven/paper bag with PE liner.
8. Storage and transport: It should be stored in a dry and ventilative warehouse and kept away from moisture, heat and stored separately from poisonous substances. Handled with care, so as to avoid the damage to packing bags.