|
Appearance
|
White hygroscopic crystalline powder
|
|
Assay
|
Min 99%
|
|
Barium (Ba)
|
Max 0.003%
|
|
Calcium (Ca)
|
Max 0.01%
|
|
Heavy metals (by ICP-OES)
|
Max 0.002%
|
|
Insoluble matter
|
Max 0.01%
|
|
Iron (Fe)
|
Max 0.001%
|
|
Loss on drying (at 105°C)
|
Max 1%
|
|
Nitrate (NO3)
|
Max 0.001%
|
|
Potassium (K)
|
Max 0.01%
|
|
Sodium (Na)
|
Max 0.2%
|
|
Sulphate (SO4)
|
Max 0.01%
|
|
Titrable base
|
Max 0.008 meq/g
|