Appearance (Colour)
White
Appearance (Form)
Crystalline powder
Solubility (Turbidity) 10% aq. solution
Clear
Solubility (Colour) 10% aq. solution
Colourless
Assay (NT)
min. 99.5%
pH (5% aq. solution)
7.0 - 9.0
Insoluble matter
max. 0.005%
Water (KF)
15.61 - 15.71%
Chloride (CI)
max. 0.0005%
Sulphate (SO4)
max. 0.005%
Iron (Fe)
max. 0.0005%
Heavy Metals (Pb)
max. 0.0005%
Phosphate (PO4)
max. 0.0005%
Copper (Cu)
max. 0.0005%
Nitrogen Compounds (N)
max. 0.002%
Potassium (K)
max. 0.002%
Ammonium (NH4)
max. 0.003%
Calcium (Ca)
max. 0.01%
Notes
Used as a Calibration standard for Karl Fischer.
