|
Appearance
|
White crystalline powder
|
|
Assay (complexometric)
|
99.0-102.0%
|
|
Insoluble matter
|
Max 0.01%
|
|
pH (5% solution)
|
7.0 - 8.5
|
|
Chloride (Cl)
|
Max 0.001%
|
|
Substance oxidizables (as NO3)
|
Max 0.005%
|
|
Heavy metals (by ICP-OES)
|
Max 0.0005%
|
|
Calcium (Ca)
|
Max 0.05%
|
|
Iron (Fe)
|
Max 0.0005%
|
|
Strontium (Sr)
|
Max 0.2%
|
|
Potassium (K)
|
Max 0.003%
|
|
Sodium (Na)
|
Max 0.005%
|
|
Substance not precipitated by sulphuric acid (as SO4)
|
Max 0.1%
|