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Appearance
|
White crystalline powder or crystal or flakes
|
|
Assay (acidimetric)
|
Min 97%
|
|
Substance insoluble in dilute HCl
|
Max 0.02%
|
|
Chloride (Cl)
|
Max 0.05%
|
|
Iron (Fe)
|
Max 0.003%
|
|
Strontium (Sr)
|
Max 1.0%
|
|
Heavy metal (as Pb)
|
Max 0.002%
|
|
Carbonates (as BaCO3)
|
Max 2.0%
|
|
Sulphide (S)
|
Max 0.005%
|
|
Substance not precipitated by dilute H2SO4 (as SO4)
|
Max 0.2%
|