|
Appearance
|
Colourless crystals/ white crystalline powder
|
|
Assay (titration)
|
Min.99.0%
|
|
Insoluble matter
|
Max 0.005%
|
|
pH (5% solution in water; 25°C)
|
5.0 to 6.0
|
|
Residue on ignition
|
Max 0.005 %
|
|
Heavy metals (by ICP-OES)
|
Max 0.0005%
|
|
Chloride (Cl)
|
Max 0.0005%
|
|
Nitrate (NO3)
|
Max 0.001%
|
|
Phosphate (PO4)
|
Max 0.0005%
|
|
Iron (Fe)
|
Max 0.0005%
|