Purity (Sodium Chloride Dry Weight %): More than 99.4% NaCl
Water insoluble matter: Less than 0.03%
Moisture: Less than 0.3%
Calcium: Less than 0.01%
Magnesium: Less than 0.1%
Water Insoluble matter: 0.005 %
Copper (Cu), Zinc (Zn), Arsenic (As), Mercury (Hg) and Lead (Pb): Absent
Iron: 1 ppm
Cadmium: 0.013 ppm
Calcium Carbonate: Absent
Sulfate: 0.05%
Reference: SGS