... relative density 3.14; Dilute soluble in dilute hydrochloric acid and nitric acid, melting point of 1670; Water-soluble, non-soluble ... to 1180 can be formed α,α more soluble than β citric acid.4.Use: Industrial calcium in the three manufacturing ceramics, stained ... rubber and dyeing industry, medicine, used for acid suppression agent, nutritional supplements, by-agent, can be used as the buffer, pH ...