Product description
Product Description
Calcium Carbonate( Food Grade):
1. High quality with inspection
2. Competitive price with easy delivery
3. Pass ISO certificate
4. Prompt shipment
5. High purity and personalized service
Calcium carbonate is a chemical compound with the chemical formula CaCO3. It is a common substance found in rock in all parts of the world. It is the main component of shells, marine organisms, snails, pearls and eggshells.
Calcium carbonate is the active ingredient in agriculturallime and is usually the principal cause of hard water. It is commonly used medicinally as a calcium supplement or as an antacid, but excessive consumption can be hazardous. It has high quality and competitive price.
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product |
Calcium carbonate |
CAS No. |
471-34-1 |
Molecular Formula: |
Ca C O 3
|
appearance |
Fine white powder |
specifications |
Because impurities containing different colors are gray, dark gray, light yellow, brown or dignitaries, the density is 2.2 to 2.9g/cm³ . It is hard to dissolve in water but it is soluble in water containing carbon dioxide, generating acid-soluble calcium carbonate. It will emit carbon dioxide dissolving in hydrochloric acid.
Properties |
Molecular formula |
CaCO3
|
Exact mass |
100.0869 g/mol |
Appearance |
Fine white powder |
Density |
2.71 g/cm 3 ( calcite )
2.83 g/cm 3 ( aragonite ) |
Melting point |
825 ° C (calcite)
1339 ° C (aragonite) |
Boiling point |
decomposes |
Solubility in water |
0.00015 mol/L (25° C) |
Solubility product, K sp
|
4.8 × 10 − 9 [1] |
Solubility in dilute acids |
soluble |
Acidity (p K a) |
9.0 |
Refractive index ( n D) |
1.59 |
Structure |
Crystal structure |
Trigonal |
Space group |
32/m |
Hazards |
MSDS |
ICSC 1193 |
|
use |
Limestone is widely used in building materials, metallurgy, chemical industry, agriculture and other fields. It is used as cement manufacturing materail, glass, soda ash and precipitated calcium carbonate manufactuere, etc.
|