Monocalcium phosphate is an inorganic compound with the chemical formula Ca2. It is commonly found as the monohydrate, Ca2·H2O. Both salts are colourless solids. They are used mainly as superphosphate
Dicalcium phosphate is the calcium phosphate with the formula CaHPO4 and its dihydrate. The "di" prefix in the common name arises because the formation of the HPO42– anion involves the removal of two
Monocalcium phosphate
…relatively high purity, as required for baking, is produced by treating calcium hydroxide with phosphoric acid: Samples of Ca(H2PO4)2 tend to convert to dicalcium phosphate: Superphosphate fertilizers are produced by treatment of "phosphate rock" with acids ("acidulation"). Using phosphoric acid, fluorapatite is converted…
Ca2 from JCS A Curry, N.A.; Jones, D.W.
A portion of the lattice of dicalcium phosphate dihydrate, highlighting the 8-coordinated Ca2+ center and the location of the protons on three ligands (green = calcium, red = oxygen, orange = phosphorus, white = hydrogen)