Chemical Name: Calcium Hydrogen Phosphate Molecular Formula: CaHPO4.2H2O Molecular Weight:172.9 Performance: white crystallization powder, odorless & tasteless, soluble in diluted hydrochloric acid, nitric acid and acetic acid, slightly soluble in water, insoluble in ethanol, a relative density of 2.23, stable in air, begin to lose water and become anhydrous calcium hydrogen phosphate at 65. ...