Calcium dihydrogen phosphate
From Wikipedia, the free encyclopedia
Calcium dihydrogen phosphate (also called mono-calcium orthophosphate) Ca(H2PO4)2 is a chemical compound.
Decomposes at 203 °C. The common Ca(H2PO4)2•H2O releases a water molecule before it melts at 109 °C.
Contents |
[edit] Uses
[edit] Fertilizer
Phosphorus is an important nutrient and so is a common component of fertilizers. Phosphate rock, Ca3(PO4)2 is available but is too insoluble to be an efficient fertilizer. Therefore it is frequently converted into the more soluble calcium dihydrogen phosphate, generally by the use of sulfuric acid H2SO4, the result is hydrated to turn the calcium sulfate in to the dihydrate gypsum and sold as "superphosphate of lime"
- Ca3(PO4)2 + 4 H2SO4 + 2 H2O → 2 CaSO4•2H2O + Ca(H2PO4)2
Alternately phospate rock may be treated with phosphoric acid to produce a purer form of calcium dihydrogen phosphate and is sold as "triple phosphate".
- Ca3(PO4)2 + 4 H3PO4 → 3 Ca(H2PO4)2
[edit] Leavening Agent
Monocalcium Phosphate is also used in the food industry as a Leavening agent to cause baked goods to rise.
[edit] External links
 |
This inorganic compound-related article is a stub. You can help Wikipedia by expanding it. |
