Cd(NO3)2.4H2O M.W. 308.47 250 gmAssay min 99.0% 500 gmInsoluble matter in H2O max 0.01%Chloride(Cl) max 0.005%Sulphate(SO4) max 0.01%Iron(Fe) max 0.001%Potassium(K) max 0.002%Sodium(Na) max 0.01%Zinc(Zn) max 0.002%