| ≥1 piece |
Test Item | Standard | Result |
Appearance | White crystalline powder or granular | White crystalline granular |
Assay(on dry basis),% | 99.5-100.5 | 99.96 |
PH | 5-7 | 6.32 |
Loss on drying,% | ≤0.2 | 0.03 |
Ash,% | ≤0.1 | 0.02 |
Melting range,℃ | 119-123 | 119.9-122.7 |
Lead(Pb),mg/kg | ≤0.5 | 0.03 |
As,mg/kg | ≤0.3 | <0.01 |
Reducing Sugars,% | ≤0.3 | <0.3 |
Ribitol and glycerol,% | ≤0.1 | <0.01 |
Cont of bacteria,cfu/g | ≤300 | <10 |
Yest and Moulds cfu/g | ≤100 | <10 |
Coliform MPN/g | ≤0.3 | <0.3 |
Salmonella enteriditis | Negative | Negative |
Shigella | Negative | Negative |
Staphylococcus aureus | Negative | Negative |
Beta Hemolyticstreptococcus | Negative | Negative |