Calcium carbonate is the active ingredient in agricultural lime and is created when calcium ions in hard water react with carbonate ions to create limescale.
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26 Facts About Calcium carbonate
2.
Calcium carbonate reacts with water that is saturated with carbon dioxide to form the soluble calcium bicarbonate.
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3.
Calcium carbonate occurs as aragonite, calcite and dolomite as significant constituents of the calcium cycle.
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4.
Calcium carbonate contributors, including plankton, coralline algae, sponges, brachiopods, echinoderms, bryozoa and mollusks, are typically found in shallow water environments where sunlight and filterable food are more abundant.
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5.
Carbonate compensation depth is the point in the ocean where the rate of precipitation of calcium carbonate is balanced by the rate of dissolution due to the conditions present.
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6.
Calcium carbonate is unusual in that its solubility increases with decreasing temperature.
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7.
Main use of calcium carbonate is in the construction industry, either as a building material, or limestone aggregate for road building, as an ingredient of cement, or as the starting material for the preparation of builders' lime by burning in a kiln.
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8.
However, because of weathering mainly caused by acid rain, calcium carbonate is no longer used for building purposes on its own, but only as a raw primary substance for building materials.
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9.
Calcium carbonate is used in the purification of iron from iron ore in a blast furnace.
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10.
Calcium carbonate is added to swimming pools, as a pH corrector for maintaining alkalinity and offsetting the acidic properties of the disinfectant agent.
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11.
Fine ground calcium carbonate is an essential ingredient in the microporous film used in diapers and some building films, as the pores are nucleated around the calcium carbonate particles during the manufacture of the film by biaxial stretching.
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12.
In North America, calcium carbonate has begun to replace kaolin in the production of glossy paper.
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13.
Calcium carbonate is added to a wide range of trade and do it yourself adhesives, sealants, and decorating fillers.
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14.
In ceramic glaze applications, calcium carbonate is known as whiting, and is a common ingredient for many glazes in its white powdered form.
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15.
Ground calcium carbonate is an abrasive, in particular in its calcite form, which has the relatively low hardness level of 3 on the Mohs scale, and will therefore not scratch glass and most other ceramics, enamel, bronze, iron, and steel, and have a moderate effect on softer metals like aluminium and copper.
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16.
Calcium carbonate is widely used medicinally as an inexpensive dietary calcium supplement for gastric antacid .
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17.
Calcium carbonate is used in the production of calcium oxide as well as toothpaste and has seen a resurgence as a food preservative and color retainer, when used in or with products such as organic apples.
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18.
Calcium carbonate is the most commonly used phosphate binder, but clinicians are increasingly prescribing the more expensive, non-calcium-based phosphate binders, particularly sevelamer.
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19.
Calcium carbonate has been added to over-the-counter products, which contributes to inadvertent excessive intake.
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20.
Calcium carbonate is used as a firming agent in many canned and bottled vegetable products.
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21.
Calcium carbonate is a key ingredient in many household cleaning powders like Comet and is used as a scrubbing agent.
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22.
Calcium carbonate's hope was that the calcium carbonate would counter the acid in the stream from acid rain and save the trout that had ceased to spawn.
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23.
Currently calcium carbonate is used to neutralize acidic conditions in both soil and water.
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24.
Calcium carbonate is used in flue gas desulfurisation applications eliminating harmful and emissions from coal and other fossil fuels burnt in large fossil fuel power stations.
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25.
Calcium carbonate exists in equilibrium with calcium oxide and carbon dioxide at any temperature.
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26.
The calcium carbonate becomes less soluble as a result, and the excess precipitates as lime scale.
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