Appearance (Colour)
White
Appearance (Form)
Crystalline powder
Solubility (Turbidity) 10% aq. solution
Clear
Solubility (Colour) 10% aq. solution
Colorless
pH (5% aq. solution)
4.0 - 4.02
Assay (by Neutralization)
min. 99.9%
Insoluble matter
max. 0.005%
Loss on drying
max. 0.05%
Chloride (CI)
max. 0.002%
Sulphate (SO4)
max. 0.005%
Iron (Fe)
max. 0.0005%
Heavy Metals (Pb)
max. 0.0005%
Sulphur Compound (S)
max. 0.002%
Phthalic acid
max. 0.005%
Sodium (Na)
max. 0.005%
Absorbance (A) of 10% aq. solution in a 1cm cell v/s H2O
@330nm
max.0.05
@340nm
max.0.03
@350nm
max.0.02
@500nm
max.0.02
