Dicalcium Phosphate Dihydrate (DCPD) What is DCPD? Dicalcium phosphate dihydrate (DCPD), or CaHPO4·2H2O, is a leavening salt that transfers into an acid when it contacts water and heat. This allows its reaction with bases to produce gas in batter-based products, such as cakes or muffins. One of the characteristics of DCPD is [...]