Appearance (Colour)
White
Appearance (Form)
Hygroscopic powder
Solubility (Turbidity) 10% aq. solution
Clear
Solubility (Colour) 10% aq. solution
Colourless
Assay (by Neutralization)
min. 99.9% (dry compound)
Loss on drying
max. 1% (285°C 15 min)
Chloride (CI)
max. 0.001%
Sulphate (SO4)
max. 0.005%
Iron (Fe)
max. 0.0005%
Heavy Metals (Pb)
max. 0.0005%
Copper (Cu)
max. 0.0005%
Silicate (SiO2)
max. 0.005%
Phosphate (PO4)
max. 0.001%
Potassium (K)
max. 0.005%
Calcium (Ca)
max. 0.03%
Magnesium (Mg)
max. 0.005%
Acid insoluble matter
max. 0.01%