Calcium Carbonate

Calcium carbonate is a chemical compound with the formula CaCO3. It is a common substance found in rocks in all parts of the world, and is the main component of shells of marine organisms, snails, coal balls, 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, but excessive consumption can be hazardous.

Read more about Calcium CarbonateChemistry, Preparation, Geology, Calcination Equilibrium

Other articles related to "calcium carbonate, calcium, carbonates":

Mollusc Shell - Structure
... The calcium carbonate layers in a shell are generally of two types an outer, chalk-like prismatic layer and an inner pearly, lamellar or nacreous layer ... usually incorporate a substance called conchiolin, often in order to help bind the calcium carbonate crystals together ... Shells are almost always composed of polymorphs of calcium carbonate - either calcite or aragonite ...
Calcium Carbonate - Solubility - Solubility in A Strong or Weak Acid Solution
... Solutions of strong (HCl), moderately strong (sulfamic) or weak (acetic, citric, sorbic, lactic, phosphoric) acids are commercially available ... They are commonly used as descaling agents to remove limescale deposits ...
Modroc - Types - Lime Plaster
... Lime plaster is a mixture of calcium hydroxide and sand (or other inert fillers) ... the plaster to set by transforming the calcium hydroxide into calcium carbonate (limestone) ... To make lime plaster, limestone (calcium carbonate) is heated to produce quicklime (calcium oxide) ...
Corallina Officinalis
... It forms calcium carbonate deposits within its cells which serve to strengthen the thallus ... in colour, with white patches where the calcium carbonate is particularly concentrated, such as at the growing tips ... The calcium carbonate makes it unpalatable to most rocky shore grazers ...
Reverse Osmosis - Desalination - Pretreatment
... tendency when they are concentrated in the reject stream, acid is dosed to maintain carbonates in their soluble carbonic acid form ... + H2O Carbonic acid cannot combine with calcium to form calcium carbonate scale ... Calcium carbonate scaling tendency is estimated using the Langelier saturation index ...