Preparation
Material of 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:Applications
Use in fertilizers
Superphosphate fertilizers are produced by treatment of "Use as leavening agent
Calcium dihydrogen phosphate is used in the food industry as a leavening agent, i.e., to cause baked goods to rise. Because it is acidic, when combined with an alkali ingredient, commonly sodium bicarbonate (baking soda) or potassium bicarbonate, it reacts to produce carbon dioxide and a salt. Outward pressure of the carbon dioxide gas causes the rising effect. When combined in a ready-made baking powder, the acid and alkali ingredients are included in the right proportions such that they will exactly neutralize each other and not significantly affect the overall pH of the product. AMCP and MCP are fast acting, releasing most carbon dioxide within minutes of mixing. It is popularly used in pancake mixes. In double acting baking powders, MCP is often combined with the slow acting acid sodium acid pyrophosphate (SAPP).John Brodie, John Godber "Bakery Processes, Chemical Leavening Agents" in ''Kirk-Othmer Encyclopedia of Chemical Technology'' 2001, John Wiley & Sons.See also
* Dicalcium phosphate * Triple superphosphateReferences
Further reading
*Havlin, J.L., J.D. Beaton, S.L. Tisdale, and W.L. Nelson. 2005. ''Soil Fertility and Fertilizers''. 7th edn. Pearson Prentice Hall, N.J., {{Calcium compounds Food additives Phosphates Calcium compounds Acid salts Inorganic fertilizers E-number additives