... yield significantly.Appearance Dark gray, gray, yellow , loose powder.Make Makeing From phosphate rock and sulfuric acid by the ... Ca(H2PO4)2•H2O],(CaSO4)Others components Phosphoric acid, free water, iron phosphate, aluminum phosphate, magnesium dihydrogen phosphate dihydrate, fluoride ... open dumping, should cover rain cover, to prevent surface water wet, to avoid the loss of dissolved phosphorus and ...