Industrial Grade
Pharmaceutical Grade
Photo Grade
Appearance:white crystal
Assay: ≥ 99%
Assay: ≥ 99.3%
Assay: ≥ 99.5%
Chloride: ≤ 0.5%
Chloride: ≤ 0.2%
Sulfate: ≤ 200ppm
Volatile: ≤ 0.5%
Loss on drying: ≤ 3%
Bromate: ≤ 100ppm
Heavy metal: ≤ 5 ppm
Mercury: ≤ 3 ppm
Arsen: ≤ 4 ppm
Arsenic: ≤ 4 ppm
Iodide: ≤ 50ppm
Minor elements ≤ 0.5ppm
Minor elements: ≤ 0.5 ppm
PH: 6.0--8.0