|
Appearance
|
White powder
|
|
Assay (HCl titration)
|
Min 99%
|
|
Insoluble matter (10 % dil. HCl)
|
Max 0.01%
|
|
Chloride (Cl)
|
Max 0.005%
|
|
Calcium (Ca)
|
Max 0.01 %
|
|
Iron (Fe)
|
Max 0.002%
|
|
Heavy metals (by ICP-OES)
|
Max 0.002%
|
|
Potassium (K)
|
Max 0.01%
|
|
Sodium (Na)
|
Max 0.1%
|
|
Nitrate (NO3)
|
Max 0.0005%
|
|
Ammonium (NH4)
|
Max 0.0005%
|
|
Sulphur compounds (as SO4)
|
Max 0.2%
|