|
Appearance
|
A white crystalline powder
|
|
Assay
|
Min 97%
|
|
Insoluble matter
|
Max 0.003%
|
|
Chloride (Cl)
|
Max 0.5%
|
|
Phosphate (PO4)
|
Max 0.1%
|
|
Sulphate (SO4)
|
Max 0.005%
|
|
Sulphide (S)
|
Max 0.0005%
|
|
Thiocyanate (SCN)
|
Max 0.01%
|
|
Iron (Fe)
|
Max 0.02%
|
|
Lead (Pb)
|
Max 0.0002%
|
|
Sodium (Na)
|
Max 0.3%
|
|
Zinc (Zn)
|
Max 0.02%
|