For sewage treatment, orraw material of other iron salt,solution for absorbing chlorin,feed additive,jewellery colorant Package: Crystal packed by ... by plastic barrel or tank.•Usage: For sewage treatment, orraw material of other iron salt,solution for absorbing chlorin,feed additive,jewellery colorant ... %Contents of As≤0.001%≤0.01 % Crystal Ferrous Chloride for water treatment