Calcium Carbonate 99 +%, Ph. Eur, USP, E170

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500 g
€9,50 Excl. tax
€11,50 Incl. tax
Variant500 g
CAS471-34-1
Article codeKK.9834.1
Delivery1 werkdag
1 Kg
€14,90 Excl. tax
€18,03 Incl. tax
Variant1 Kg
CAS471-34-1
Article codeKK.9834.2
Delivery1 werkdag
5 Kg
€62,50 Excl. tax
€75,63 Incl. tax
Variant5 Kg
CAS471-34-1
Article codeKK.9834.3
Delivery1 werkdag
20 Kg
€220,60 Excl. tax
€266,93 Incl. tax
Variant20 Kg
CAS471-34-1
Article codeKK.9834.4
Delivery1 werkdag
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This variant of Calcium Carbonate is of pharmaceutical quality!

Calcium carbonate, or in its common name, lime carbonate, is a chemical compound of the elements calcium, carbon and oxygen with the chemical formula CaCO3. As a calcium salt of carbonic acid, it belongs to the group of substances called carbonates. It is a colorless, crystalline solid whose crystal structure consists of the ions Ca2 + and CO32− in a ratio of 1: 1.

use

Natural calcium carbonate (limestone) is used in large quantities as a raw material for the building materials industry, as an aggregate in the steel industry, as a mineral fertilizer, as feed lime and as a mineral filler in various industrial applications (e.g. in paper, paint, lacquer, plasters, plastics and rugs back). In total, more than five billion tons of limestone are extracted annually.

-Building material
The main field of application is the production of cement (calcium silicate, calcium aluminate) and quicklime.

Burning lime produces quick lime. Hydrated lime (calcium hydroxide Ca (OH) 2, slaked lime) is produced from this by quenching with water. It reacts with the carbon dioxide in the air to form lime and closes the technical lime cycle. Hydrated lime and lime are suitable as plaster or wall coverings such as Tadelakt. The first discoverers of this phenomenon were the Romans, who exploited lime kilns on a large scale.

filler
In terms of volume sold worldwide, calcium carbonate is the most important filler. Although more than five percent of the earth's crust consists of calcium carbonate rocks, only a few deposits are suitable for the extraction of fillers, which must be as white as possible. The largest industrial user of white calcium carbonates is the paper industry with an amount of more than 10 million tons (worldwide) per year, followed by the plastics and building materials industry (plaster and paint) with a total of another 15 million tons per year. For use in the paper industry, especially as a coloring agent, deposits are mined in Europe, particularly in France, Italy, Germany, Norway and Austria, where the mineral is ground by wet grinding and sold as a slurry (sometimes by tanker).

-Agriculture
The calcium-magnesium carbonate content in the soil structure influences the pH value and thus the structural properties, the biotic activity as well as the storage capacity and conversion of the nutrients in the soil. This makes the pH value the most important parameter for the cultivation of all soil types. An adequate supply of lime with “free” calcium carbonate that is not bound to soil particles plays an important role. Limiting efforts to prevent soil acidification and maintain or improve soil fertility. Calcium carbonate has been used for centuries to improve soil fertility in agriculture. The calcium carbonate content in the soil is determined by adding 10% hydrochloric acid and evaluating the reaction that occurs, such as foaming.

-Other areas of application
Calcium carbonate used to be used as blackboard chalk, especially in France as so-called champagne chalk, which consists of limestone, a chemically very pure calcium carbonate. About 55 percent of the chalk sold in Germany today consists of gypsum (calcium sulfate).

Calcium carbonate is approved as a food additive and coloring agent (E 170) and is often used in, for example, baking bread rolls. For other uses, calcium carbonate is broken and / or ground and sold in pieces or as flour. It is contained in table salt as a drip aid.

For some applications, natural calcium carbonates are not optimal, so synthetic calcium carbonates are used here. Under the name Hydro-Calcit, synthetic calcium carbonate is used in water technology to deacidify water with "aggressive carbon dioxide". This process is still considered one of the oldest deacidification processes.

Along with magnesium carbonate, calcium carbonate is used in gastric acid regulation medicines (antacids).

Technical data:

Empirical formula CaCO3
Molar mass (M) 100.09 g / mol
Solubility: approx. 14 mg / l (H2O, 20 ° C)
WGK 1
CAS No. [471-34-1]
EC no. 207-439-9

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