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Dicalcium phosphate is the calcium phosphate with the formula CaHPO 4 and its dihydrate. The "di" prefix in the common name arises because the formation of the HPO 4 2– anion involves the removal of two protons from phosphoric acid , H 3 PO 4 .
Calcium phosphate stones account for approximately 15% of kidney stone disease. Calcium phosphate stones tend to grow in alkaline urine, especially when Proteus bacteria are present. It is the most common type in pregnant women. [6] Calcium phosphate is the usual constitution of microcalcifications of the breast, particularly dystrophic ...
List of chemical elements — with basic properties like standard atomic weight, m.p., b.p., abundance; Abundance of the chemical elements; Abundances of the elements (data page) — Earth's crust, sea water, Sun and Solar System; Abundance of elements in Earth's crust
Primordial From decay Synthetic Border shows natural occurrence of the element Standard atomic weight A r, std (E) [ 1 ] Ca: 40.078 — Abridged value (uncertainty omitted here) [ 2 ]
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"Variation of lead isotopic composition and atomic weight in terrestrial materials (IUPAC Technical Report)". doi : 10.1515/pac-2018-0916 . * "2020" is an inconsistent year for change publication: CIAAW maintains that only odd years, changes are publicised.
Example of a calcium feed phosphate production. Phosphoric acid is neutralized by means of calcium oxide or calcium carbonate, or a mixture of them. Dicalcium phosphate: H 3 PO 4 + CaO + H 2 O ↔ CaHPO 4 + 2 H 2 O Monocalcium phosphate: 2H 3 PO 4 + CaO + H 2 O ↔ Ca(H 2 PO 4) 2.H 2 O + H 2 O Or : Based on dicalcium phosphate
Calcium is a chemical element; it has symbol Ca and atomic number 20. As an alkaline earth metal , calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium .