| ITEM | STANDARD |
| Appearance | White to off-white powder |
| Assay (%) | 99.0 - 101.0 |
| Loss on drying (%) | =<1 |
| Heat Stability | No change in colour after heating for 90 minutes at 105℃ |
| Acidity (as C6H8O2, %) | =<1 |
| Alkalinity (as K2CO3, %) | =<1 |
| Chloride (as Cl, %) | =<0.018 |
| Aldehydes (as formaldehyde, %) | =<0.1 |
| Sulfate (as SO4, %) | =<0.038 |
| Arsenic | =<3 mg/ kg |
| Lead | =<2 mg/ kg |
| Mercury | =<1 mg/ kg |
| Heavy Metals (as PB) | =<10 mg/ kg |
| Oxidizer | None |
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