| ≥1 piece | 35 |
Product Description
|
Item
|
USP26
|
EP
|
GB
|
|
Identification
|
Infrared
|
Infrared or chemical method
|
Infrared or chemical method
|
|
pH (5% aqueous solution)
|
5.5～9.5
|
6.5～8.5
|
5.5~9.5
|
|
Specific optical rotation
|
－29o～－32o
|
－29o～－32o
|
－29o～－32o
|
|
Water content
|
≤4%
|
≤1%
|
≤4%
|
|
Purity
|
97～103%
|
98～102%
|
97～103%
|
|
Sodium
|
≤0.1%
|
|
≤0.1%
|
|
Potassium
|
≤0.2%
|
|
|
|
Heavy metal (base on Pb)
|
≤0.002%
|
≤0.001%
|
≤0.001%
|
|
Arsenic
|
≤0.0002%
|
|
≤0.0002%
|
|
Chloride
|
≤0.40%
|
≤0.20%
|
≤0.40%
|
|
Residue on ignition
|
≤0.5%
|
|
|
|
Cyanogen
|
|
|
not detected
|
|
Clarity of solution
|
|
colorless clear
|
|
|
Relative material (HPLC)
|
|
impurity A ≤0.5%
|
|
|
|
other impurities
|