Basis: Water solution of Iron III Chloride (FeCI3) Specific Gravity: 1.38 to 1.49 Approximate Concentration: Minimum 37% Dry Ferric Chloride: 4.25 to 5.00 lb/gal wt. Insoluble Purity: < 0.1% Free Acid as HC1: <1.0% Ferrous Chloride: <0.1% Mercury Impurities: <0.2 ppb Lead: Report, method detection limit 100 ug/kg Manganese: Report, method detection limit 100 ug/kg Chromium: Report, 1 ug/kg Titanium: Report, method detection limit 100 ug/kg Radionuclides: No measurable amount Phosphorous: max 36 mg/kg dry wt. Sulfur: max 550 mg/kg dry wt. Silver: Report, method detection limit 1 ug/kg Arsenic: Report, method detection limit 100 ug/kg Barium: Report, method detection limit 100 ug/kg Beryllium: Report, method detection limit 1 ug/kg Cadmium: Report, method detection limit 1 ug/kg Copper: Report, method detection limit 100 ug/kg Magnesium: Report, method detection limit 100 ug/kg Molybdenum: Report, method detection limit 100 ug/kg Nickel: Report, method detection limit 100 ug/kg **Selenium: Report, method detection limit ug/kg Zinc: Report, method detection limit 100 ug/kg Thallium: Report, method detection limit 1 ug/kg Antimony: Report, method detection limit 100 ug/kg Lithium: Report, method detection limit 100 ug/kg