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| Testing Items | Standard Requirements |
| Appearance | White crystal powder |
| Content | 98.0~102.0 % |
| Chlorinated organic compounds | 100ppm Max |
| Gallic acid | 0.50% max |
| Appearance of solution | The solution is clear,not more intensely colored than reference solution BY5 |
| Loss on Drying | 0.50% max |
| Melting point | 148-150℃ |
| Ignited residue | 0.1% max |
| Heavy metal | 10mg/kg |
| Lead/pb mg/kg | 1mg/kg |
| As mg/kg | 3mg/kg |
| Mercury mg/kg | 1mg/kg |
| Microbiology E. Coli : F. St. Aureus : G. Salmonella : H. Pseudomonas | Negative Negative Negative Negative |