Appearance

White powder or crystalline powder, bitter and spicy, hygroscopic

Conforms

Specific rotation

-16.0.~ -26.0.

-19.8.

Acidity

PH should be 5.0~7.0

5.4

Solution clarity

And colorimetry

Should conform

Conforms

Absorption rate

Not more than 0.10

0.09

Abnormal toxicity

Should conform

Conforms

Loss on drying

<5%

3.3%

Heavy metals

Not more than 15ppm

Conforms

Potassium 

Not more than 0.20%

Conforms

Arsenic

Not more than 2ppm

Conforms

Assay :

 97~103%

99.7%

Conclusion

Qualified