| ≥1 piece |
Specification:
|
Appearance
|
White crystal or crystalline powder
|
|
Purity(on dry basis)
|
98~102%
|
|
PH
|
4.5~6.0
|
|
Specific rotation
|
+14.5~+16.5
|
|
Residue on ignition(sulfate)
|
≤0.2%
|
|
Sulfate
|
≤0.075%
|
|
Transmittance
|
>95%
|
|
Heavy metals(pb)
|
≤10ppm
|
|
Arsenic(As)
|
≤3ppm
|
|
Related impurity
|
≤2%
|