Calcium carbonate is widely used in rubber, plastics, paints, paper, food, cosmetics, pharmaceutical and daily chemical industries.
Calcium Carbonate is the calcium salt of carbonic acid which is used as an anticaking agent and dough strengthener. it is available in varying particle sizes ranging from coarse to fine powder. it is practically insoluble in water and alcohol, but the presence of any ammonium salt or carbon dioxide increases its solubility while the presence of any alkali hydroxide reduces its solubility. it has a ph of 9–9.5. it is the primary source of lime (calcium oxide) which is made by heating limestone in a furnace. calcium carbonate is used as a filler in baking powder, for calcium enrichment, as a mild buffering agent in doughs, as a source of calcium ions in dry mix desserts, and as a neutralizer in antacids. it is also termed limestone.
White or off-white powder
|Alkalis and Mg||≤1.0%||0.86%|
|Loss on drying||≤2.0%||0.13%|
|Appearance:||White or off-white powder|
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