Calcium hydroxide 1305-62-0 for environment protection 90% 1, Best quality & competitive price 2, ... ISO facility Calcium hydroxide 1305-62-0 for environment protection 90%1, Best quality & competitive price2, ISO ... white powder, highly alkaline, highly hygroscopic, density: 2.24, bulk density: 0.4-0.6, soluble in acids, insoluble in ... : 25kg/pack, in plastic-coated bag or in bulk.