... water soluble 100% Calcium Nitrate 99% crystal (CaO 23.4%, N 10.7 %) Product Name: Calcium Nitrate 99% crystal (CaO ... 99.0Water Insolubles,% ≤0.01Chloride(Cl),% ≤0.005Sulfate(SO4),% ≤0.03Fe,% ≤0.002CaO,% ≥23.4N,% ≥11.7Heavy metal% ≤0.001Ph5-7ApperanceWhite Crystal Physicochemical Properties:Calcium nitrate ... Not dissolve in nitric acid.Usage:The calcium nitrate is used as an oxidizer.fertilizer,polymer ...