|
Appearance
|
White Crystals, Crystalline Powder and/or Chunks
|
|
Assay (acidimetric)
|
98.0 - 102.0%
|
|
PH (5% solution in CO2 free water)
|
7.7—8.1
|
|
Insoluble matter
|
Max.0.005%
|
|
Chloride (Cl)
|
Max 0.003%
|
|
Nitrate (NO3)
|
Max 0.003%
|
|
Sulphate (SO4)
|
Max 0.01%
|
|
Arsenic (As)
|
Max 0.0001%
|
|
Calcium (Ca)
|
Max.0.003%
|
|
Iron (Fe)
|
Max 0.001%
|
|
Heavy metal (as Pb)
|
Max 0.001%
|
|
Potassium (K)
|
Max 0.005%
|
|
Sodium (Na)
|
Max 0.005%
|