|
Appearance
|
White crystalline powder
|
|
Assay
|
99 - 101%
|
|
pH (5% solution in water)
|
7.5 - 9.2
|
|
Insoluble matter in water
|
Max 0.05%
|
|
Loss on drying (at 105°C)
|
Max 1%
|
|
Chloride (Cl)
|
Max 0.01%
|
|
Sulphate (SO4)
|
Max 0.005%
|
|
Calcium & magnesium (as Ca)
|
Passes test
|
|
Potassium (K) - as per Pharma
|
Passes test
|
|
Iron (Fe)
|
Max 0.001%
|
|
Heavy metal (as Pb)
|
Max 0.001%
|