Calcium Citrate
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It is commonly used as a food additive (E333), usually as a preservative, but sometimes for flavor |
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Calcium citrate is the calcium salt of citric acid. Calcium citrate is found in some dietary calcium supplements (e.g. Citracal or Caltrate). Calcium makes up 24.1% of calcium citrate (anhydrous) and 21.1% of calcium citrate (tetrahydrate) by mass. The tetrahydrate occurs in nature as the mineral Earlandite. Calcium citrate is sparingly soluble in water. Needle-shaped crystals of tricalcium dicitrate tetrahydrate [Ca3(C6H5O7)2(H2O)2]·2H2O were obtained by hydrothermal synthesis. The crystal structure comprises a three-dimensional network in which eightfold coordinated Ca2+ cations are linked by citrate anions and hydrogen bonds between two non-coordinating crystal water molecules and two coordinating water molecules. |
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Documents
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General Info
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Published | ||
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Nov 09, 2022 |
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Nov 09, 2022 |
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Chemicals |
