|
Appearance
|
Reddish foil
|
|
Assay (iodometric)
|
Min 99.7%
|
|
Substance insoluble in HNO3
|
Max 0.02 %
|
|
Ag (silver)
|
Max 0.002%
|
|
Arsenic (As)
|
Max 0.0002%
|
|
Iron (Fe)
|
Max 0.005%
|
|
Manganese (Mn)
|
Max 0.005%
|
|
Lead (Pb)
|
Max 0.05%
|
|
Antimony (Sb)
|
Max 0.005%
|
|
Tin (Sn)
|
Max 0.005%
|