Molecular Formula: CaCl2.2H2O; GR (AR) grade; CAS No.: 10035‐04‐8Bottom of Form; Purity: min. 99.9~103.0%; Solubility in water: to past test; pH (50g/ml, 25oC): 4.5~8.5; Sulfate (SO4): max.0.005%; Nitrate (NO3): max.0.003%; Phosphate (PO4): max.0.001%; Sodium (Na):max0.01%; Potassium(K): Max0.01%; Copper(Cu):max.2ppm; Magnesium(Mg):max0.01%;Strontium(Sr):max0.01%; Barium(Ba):max0.006%; Lead(Pb):max.5ppm; Arsenic(As):max.1ppm;Iron(Fe):max.2ppm; Ammonium(NH4):max0.001%