|
Appearance
|
White to Yellow or Beige powder
|
|
Assay (by HClO4 titration)
|
Min 96%
|
|
Melting range
|
166 - 170°C
|
|
Insoluble matter in acetic acid
|
Passes test
|
|
Loss on drying (at 120°C)
|
Max 0.5%
|
|
Residue on ignition (as SO4)
|
Max 0.1%
|
|
Chloride (Cl)
|
Max 0.05%
|
|
Sulphate (SO4)
|
Max 0.02%
|
|
Copper (Cu)
|
Max 0.001%
|
|
Iron (Fe)
|
Max 0.001%
|
|
Nickel (Ni)
|
Max 0.001%
|
|
Lead (Pb)
|
Max 0.001%
|