|
Appearance
|
White crystalline powder
|
|
Assay (by HClO4 titration)
|
Min 99%
|
|
Insoluble matter
|
Max 0.005%
|
|
Acidity (as HF)
|
Max 0.05%
|
|
Alkalinity (as KOH)
|
Max 0.05%
|
|
Chloride (Cl)
|
Max 0.005%
|
|
Hexafluorosilicate (SiF6)
|
Max 0.05%
|
|
Sulphate (SO4)
|
Max 0.005%
|
|
Iron (Fe)
|
Max 0.001%
|
|
Heavy metal (as Pb)
|
Max 0.001%
|