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Appearance
|
A 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%
|
|
Other ninhydrin positive substances (as glycine)
|
Max 0.1%
|
|
Specific optical rotation (c=5; 5 M HCl)
|
+22.0+/-0.5 deg
|