|
Appearance
|
Colorless crystals or a white, crystalline powder
|
|
Assay
|
99.5 - 102%
|
|
Insoluble matter in water
|
Max 0.005%
|
|
pH (5% solution in water)
|
5 - 7
|
|
Nitrate (NO3)
|
Max 0.002%
|
|
Ammonium (NH4)
|
Max 0.002%
|
|
Chloride (Cl)
|
Max 0.0005%
|
|
Calcium (Ca)
|
Max 0.02%
|
|
Heavy metals (by ICP-OES)
|
Max 0.0005%
|
|
Iron (Fe)
|
Max 0.0005%
|
|
Potassium (K)
|
Max 0.005%
|
|
Manganese (Mn)
|
Max 0.0005%
|
|
Sodium (Na)
|
Max 0.005%
|
|
Strontium (Sr)
|
Max 0.005%
|