|
Appearance
|
White to yellowish white hygroscopic powder or flakes
|
|
Identification as per USP
|
Complies
|
|
K-value
|
81.0 - 97.2
|
|
pH (5% solution)
|
4.0 - 7.0
|
|
Assay (ex N)
|
11.5 - 12.8%
|
|
Aldehydes
|
Max. 0.05%
|
|
Formic acid
|
Max. 0.5%
|
|
Hydrazine (N2H4)
|
Max. 0.0001%
|
|
Lead (Pb)
|
Max. 0.001%
|
|
Peroxide (as H2O2)
|
Max. 0.04%
|
|
Vinylpyrrolidone
|
NMT 0.001%
|
|
2-Pyrrolidone
|
NMT 3.0%
|
|
Residue on ignition
|
Max. 0.1%
|
|
Water (by KF)
|
Max. 5.0%
|