Appearance (Colour)
White
Appearance (Form)
Crystalline compound
Solubility (Turbidity) 10% aq. solution
Clear
Solubility (Colour) 10% aq. solution
Colourless
Assay
min. 99.5%
pH (5% aq. solution)
6.0-8.5
Loss on drying
max. 1%
Chloride (CI)
max. 0.01%
Iron (Fe)
max. 0.0005%
Heavy Metals (Pb)
max. 0.0005%
Sulphate & sulphite (SO4)
max. 0.03%
Sulphide (S)
max. 0.0001%
Copper (Cu)
max. 0.0005%
Potassium (K)
max. 0.001%
Nitrogen Compounds (N)
max. 0.002%