Calcium Carbonate USP

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, and is the main component of shells of marine organisms, snails, pearls, and eggshells. Calcium carbonate is the active ingredient in agricultural lime, and is usually the principal cause of hard water. It is commonly used medicinally as a calcium supplement or as an antacid.

Health and dietary applications

Calcium carbonate is widely used medicinally as an inexpensive dietary calcium supplement or gastric antacid. It may be used as a phosphate binder for the treatment of hyperphosphatemia (primarily in patients with chronic renal failure). It is also used in the pharmaceutical industry as an inert filler for tablets and other pharmaceuticals.

Calcium carbonate is known among IBS sufferers to help reduce diarrhea. Some individuals report being symptom-free since starting supplementation. The process in which calcium carbonate reduces diarrhea is by binding water in the bowel, which creates a stool that is firmer and better formed. Calcium carbonate supplements are often combined with magnesium in various proportions. This should be taken into account as magnesium is known to cause diarrhea.

Calcium carbonate is used in the production of toothpaste and has seen a resurgence as a food preservative and color retainer, when used in or with products such as organic apples or food.

It is used in some soy milk products as a source of dietary calcium; one study suggests that calcium carbonate might be as bioavailable as the calcium in cow’s milk. Calcium carbonate is also used as a firming agent in many canned or bottled vegetable products.

Synonym ——
CAS No. 471-34-1
Molecular Formula CaCO3
Molecular Weight 100.09
Description A white to off white granule
Specifications Loss on drying Max. 2.0%
Acid insoluble substances Max. 0.2%
Flouride Max. 50ppm
Arsenic Max. 3ppm
Barium USP
Lead Max. 3ppm
Heavy metals Max. 20ppm
Magnesium and alkali salts Max. 1.0%
Iron Max. 0.1%
Mercury Max. 0.5ppm
Assay (as CaCO3) 98.0% to 100.5%
Total Moulds and Yeasts 10
Packing 25kg & 50kg Fiber Drum