|
Appearance
|
White crystalline powder
|
|
Assay (argentometric; on dried basis)
|
Min 99%
|
|
Specific optical rotation ([α]20/D)
|
+8.5 to +9.5 deg
|
|
Heavy metal (as Pb)
|
Max 0.001%
|
|
Ammonium (NH4)
|
Max 0.01%
|
|
Foreign amino acids
|
Max 0.3%
|
|
Other ninhydrin positive substances (as glycine)
|
Max 0.1%
|