Calcium Phosphate
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Calcium Phosphate

Calcium phosphate is a family of materials and minerals containing calcium ions (Ca2+) together with inorganic phosphate anions. Some so-called calcium phosphates contain oxide and hydroxide as well. Calcium phosphates are white solids of nutritious value[1] and are found in many living organisms, e.g., bone mineral and tooth enamel.[2] In milk, it exists in a colloidal form in micelles bound to casein protein with magnesium, zinc, and citrate-collectively referred to as colloidal calcium phosphate (CCP).[3] Various calcium phosphate minerals are used in the production of phosphoric acid and fertilizers. Overuse of certain forms of calcium phosphate can lead to nutrient-containing surface runoff and subsequent adverse effects upon receiving waters such as algal blooms and eutrophication.

Orthophosphates, di- and monohydrogen phosphates

These materials contain Ca2+ combined with PO43-,H2PO4- , and/or HPO42-:

Di- and polyphosphates

These materials contain Ca2+ combined with the polyphosphates, such as P2O74- and triphosphate [P3O10]5-:

Hydroxy- and oxo-phosphates

These materials contain other anions in addition to phosphate:


  1. ^ Klaus Schrödter; Gerhard Bettermann; Thomas Staffel; Friedrich Wahl; Thomas Klein; Thomas Hofmann (2008). "Phosphoric Acid and Phosphates". Ullmann's Encyclopedia of Industrial Chemistry. Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a19_465.pub3. ISBN 978-3527306732.
  2. ^ "What Substances Make Up Your Teeth? | Affordable Dental Care". 2015-07-15. Retrieved .
  3. ^ A. Y. Tamime, ed. (2006). Brined cheeses - The Society of Dairy Technology (SDT). Wiley-Blackwell. ISBN 978-1-4051-2460-7.

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