|
Appearance
|
Silvery white soft, waxy surface
|
|
Assay
|
Min 99%
|
|
Chloride (Cl)
|
Max 0.002%
|
|
Sulphate (SO4)
|
Max 0.002%
|
|
Phosphate (PO4)
|
Max 0.0005%
|
|
Total nitrogen (N)
|
Max 0.0005%
|
|
Heavy metal (as Pb)
|
Max 0.0005%
|
|
Iron (Fe)
|
Max 0.001%
|
|
Calcium (Ca)
|
Max 0.05%
|
|
Potassium (K)
|
Max 0.01%
|