|
Appearance
|
White granules or crystalline powder
|
|
Assay
|
Min 99.5%
|
|
Melting point
|
132 - 133°C
|
|
Insoluble matter
|
Max 0.003%
|
|
Acidity
|
Max 0.05 ml N%
|
|
Alkalinity
|
Max 0.05 ml N%
|
|
Sulphated ash
|
Max 0.005%
|
|
Chloride (Cl)
|
Max 0.0005%
|
|
Sulphate (SO4)
|
Max 0.001%
|
|
Copper (Cu)
|
Max 0.0001%
|
|
Iron (Fe)
|
Max 0.0001%
|
|
Lead (Pb)
|
Max 0.0002%
|
|
Biuret (C2H5N3O2)
|
Max 0.1%
|