|
Items
|
Specifications
|
|
|
|
|
Description
|
White or almost white crystalline powder, smellless and bitter taste
|
|
Melting Point
|
151-154℃
|
|
Colour Reaction
|
Positive reaction
|
|
Comparative Spectrum
|
Retention time of the principal peak is identical with that of the comparative solution
|
|
Comparative Spectrum
|
Infrared rays absorption spectrum is identical with comparative spectrum
|
|
PH
|
5.0-7.0
|
|
Related Substances
|
The area of total impurities’ peak isn’t more than the area of the comparative solution’s principal peak
|
|
Clarify of solution
|
Be up to the standard
|
|
Loss on drying
|
≤0.5%
|
|
Residue on ignition
|
≤0.1%
|
|
Heavy Metals
|
≤20PPM
|
|
Assay (HPLC)
|
98.0 percent to 102.0 percent
|
