white powder, It is the main material of concrete additive, it can be used in the making of antifreeze, rust inhibitor of steel calcium nitrite Formula: Ca(NO2)3 HS. No.: 28342990 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, emulsification ...