| ITEM | SPECIFICATION |
| Appearance | White to off-white granular |
| Odor | Slight characteristic odor |
| Heat stability | No change in color after heating for 90 minutes at 105℃ |
| Identification test |
|
| Assay | 99.0-101.00% |
| Loss on drying | 1.0%max |
| Alkalinity(as K2CO3) | 1.0%max |
| Chloride(as Cl) | 0.018%max |
| Sulfate (as SO4) | 0.038%max |
| Aldehydes(as formaldehyde) | 0.1%max |
| Arsenic (as As) | 3mg/kg max |
| Lead | 2mg/kg max |
| Mercury | 1mg/kg max |
| Heavy metal(as Pb) | 10mg/kg max |
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