|
Appearance
|
White Crystalline Powder
|
|
Assay (by HClO4 titration)
|
Min 99.0%
|
|
Heavy metal (as Pb)
|
Max 0.001%
|
|
Ammonium (NH4)
|
Max 0.01%
|
|
Foreign amino acids
|
Max 0.3%
|
|
Ninhydrine positive substances (as glycine)
|
Max 0.1%
|
|
Specific optical rotation ([α]20/D)
|
+14 to +15 deg
|