calcium nitrate crystal,white powder, It is the main material of concrete additive, it can be used in the making of antifreeze, calcium nitriteFormula:Ca(No2)3HS.No:28342990Product description:white powder it is the main material of concrete additive, it can be used in the making of antifreeze, rust inhibitor of steel bar, early strength agent, it also can be used in the washing of heavy oil, ...