Appearance (Colour)
White
Appearance (Form)
Crystalline powder
Solubility (Turbidity) 10% aq. solution
Clear
Solubility (Colour) 10% aq. solution
Colourless
Assay (NT)
min. 99%
Melting Point
186 - 188°C
pH (1M aq. solution)
4.0 - 6.0
Loss on drying
max 0.2%
Sulphated Ash
max 0.1%
Chloride (CI)
max 0.05%
Sulphate (SO4)
max 0.005%
Iron (Fe)
max 0.0005%
Heavy Metals (Pb)
max 0.001%
Copper (Cu)
max 0.0005%
Smooth curve
230 - 350nm
Absorbance (A) of 10% aq. solution in a 1cm cell v/s H2O
@250 nm
max. 0.1