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Appearance
|
A soft white crystalline powder
|
|
Assay (acidimetric)
|
99.5 - 101%
|
|
pH (5% solution in water)
|
8.0 - 8.5
|
|
Chloride (Cl)
|
Max 0.015%
|
|
Sulphate (SO4)
|
Max 0.01%
|
|
Total nitrogen (N)
|
Max 0.002%
|
|
Heavy metal (as Pb)
|
Max 0.0005%
|
|
Arsenic (As)
|
Max 0.0002%
|
|
Lead (Pb)
|
Max 0.0005%
|
|
Calcium (Ca)
|
Max 0.01%
|
|
Iron (Fe)
|
Max 0.002%
|