Calcium Carbonate:
Calcium Carbonate FCC Food Grade as per US Food Chemical Codex
CaCO3 Formula wt 100.09
CAS: [471-34-1]
DESCRIPTION
Calcium Carbonate occurs as a fine, white or colorless, microcrystalline powder. It is stable in air, and it is practically insoluble in water and in alcohol. The presence of any ammonium salt or carbon dioxide increases its solubility in water, but the presence of any alkali hydroxide reduces the solubility.
Function: pH control agent; nutrient; dough conditioner; firming agent; yeast nutrient.
REQUIREMENTS
Identification: A sample dissolves, with effervescence, in 1 N acetic acid, in 2.7 N hydrochloric acid, and in 1.7 N nitric acid, and the resulting solutions, after boiling, give positive tests for Calcium.
Assay: Not less than 98.0% and not more than 100.5% of CaCO3 after drying.
Acid-Insoluble Substances: Not more than 0.2%.
Arsenic: Not more than 3 mg/kg.
Fluoride: Not more than 0.005%.
Lead: Not more than 3 mg/kg.
Loss on Drying: Not more than 2%.
Magnesium and Alkali Salts: Not more than 1%.
Calcium Carbonate ACS Analytical Reagent specifications
American Chemical Society Reagent Grade
Calcium Carbonate
CaCO3
Formula Wt 100.09
CAS Number 471-34-1
REQUIREMENTS
| Assay (dried basis) | 99.0% CaCO3 min |
MAXIMUM ALLOWABLE
| Insoluble in dilute hydrochloric acid | 0.01% |
| Ammonium hydroxide precipitate | 0.01% |
| Chloride (Cl) | 0.001% |
| Sulfate (SO4) | 0.0015% |
| Ammonium (NH4) | 0.003% |
| Barium (Ba) | 0.01% |
| Heavy metals (as Pb) | 0.001% |
| Iron (Fe) | 0.003% |
| Magnesium (Mg) | 0.02% |
| Potassium (K) | 0.01% |
| Sodium (Na) | 0.1% |
| Strontium (Sr) | 0.1% |
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