|
Appearance
|
White crystalline powder
|
|
Assay (complexometric)
|
99 - 103%
|
|
Insoluble matter
|
Max 0.005%
|
|
pH (5% solution in water)
|
5.0 - 7.0
|
|
Sulphate (SO4)
|
Max 0.001%
|
|
Calcium (Ca)
|
Max 0.05%
|
|
Heavy metals (by ICP-OES)
|
Max 0.0005%
|
|
Iron (Fe)
|
Max 0.0005%
|
|
Barium (Ba)
|
Max 0.05%
|
|
Magnesium (Mg)
|
Max 0.0002%
|