|
Industrial Grade |
Pharmaceutical Grade |
Photo Grade |
|
Appearance:white crystal |
Appearance:white crystal |
Appearance:white crystal |
|
Assay: ≥ 99% |
Assay: ≥ 99.2% |
Assay: ≥ 99.5% |
|
Chloride: ≤ 0.6% |
Chloride: ≤ 0.6% |
Chloride: ≤ 0.25% |
|
Sulfate: ≤ 200ppm |
Sulfate: ≤ 200ppm |
Volatile: ≤ 0.5% |
|
Loss on drying: ≤ 3% |
Loss on drying: ≤ 3% |
Bromate: ≤ 100ppm |
|
Heavy metal: ≤ 5 ppm |
Heavy metal: ≤ 5 ppm |
Mercury: ≤ 3 ppm |
|
Arsen: ≤ 4 ppm |
Arsenic: ≤ 4 ppm |
Iodide: ≤ 50ppm |
|
Minor elements ≤ 0.5ppm |
Minor elements: ≤ 0.5 ppm |
Minor elements: ≤ 0.5 ppm |
|
PH: 6.0--8.0 |
PH: 6.0--8.0 |
PH: 6.0--8.0 |
|
Usage: Applied to the production of film, medicine, spice,dyestuff, etc. | ||