Items | Standard |
Description | White or yellowish-white crystalline powder |
Identification | Positive |
Melting point | About 198℃ |
Clarity | ≤1FTU |
Solution | ≤Y5、BY5 or GY5 |
Acidity | ≤0.2ml/g |
Related substances | ≤0.5% |
Heavy metals | ≤20ppm |
Loss on drying | ≤0.5% |
Sulphated ash | ≤0.1% |
Assay | 99.0~101.0% The dried aubstance |