Appearance (Colour)
White
Appearance (Form)
Crystalline powder
Solubility (Turbidity) 50% aq. solution
Clear
Solubility (Colour) 50% aq. solution
Colourless
Assay
min. 99.9%
pH (5% aq. solution)
5.0 - 8.0
Sulphate (SO4)
max. 0.002%
Iron (Fe)
max. 0.0002%
Heavy Metals (Pb)
max. 0.0002%
Copper (Cu)
max. 0.0003%
Sodium (Na)
max. 0.005%
Potassium (K)
max. 0.002%
Absorbance (A) of 50% aq. solution in a 1cm cell v/s H2O
@280nm
max. 0.2