|
Appearance
|
White crystalline powder
|
|
Assay (acidimetric)
|
98.5 - 101.0%
|
|
pH (5% solution)
|
5.5 - 8.5
|
|
Identity
|
Passes test
|
|
Appearance of solution
|
Passes test
|
|
Acidity or alkalinity
|
Passes test
|
|
Chloride (Cl)
|
Max 0.004%
|
|
Heavy metal (as Pb)
|
Max 0.002%
|
|
Iron (Fe)
|
Max 0.001%
|
|
Magnesium (Mg)
|
Max 0.002%
|
|
Calcium (Ca)
|
Max 0.02%
|
|
Sodium (Na)
|
Max 0.1%
|
|
Loss on drying (at 105°C)
|
Max 1.0%
|