|
Appearance
|
White crystalline powder
|
|
Assay (ex Bi)
|
Min 98%
|
|
Chloride (Cl)
|
Max 0.005%
|
|
Sulphate (SO4)
|
Max 0.002%
|
|
Ammonium (NH4)
|
Max 0.003%
|
|
Arsenic (As)
|
Max 0.0005%
|
|
Lead (Pb)
|
Max 0.005%
|
|
Calcium (Ca)
|
Max 0.005%
|
|
Iron (Fe)
|
Max 0.002%
|
|
Copper (Cu)
|
Max 0.002%
|
|
Silver (Ag)
|
Max 0.001%
|
|
Zinc (Zn)
|
Max 0.001%
|
|
Substance not precipitated by H2S (as SO4)
|
Max 0.5%
|