|
Appearance
|
Colorless crystalline powder
|
|
Assay
|
Min. 99%
|
|
Specific optical rotation ([α]20/D)
|
+8.0° to +9.0°
|
|
UV absorbance
|
Max. 0.5
|
|
Loss on drying (at 105°C; 4 hrs)
|
Max. 0.3%
|
|
Chloride (Cl)
|
Max. 0.002%
|
|
Sulphate (SO4)
|
Max. 0.01%
|
|
Heavy metal (as Pb)
|
Max. 0.001%
|
|
Ammonium (NH4)
|
Max. 0.01%
|
|
Foreign amino acids
|
Max. 0.5%
|
|
Other ninhydrin positive substances (as glycine)
|
Max. 0.1%
|