Appearance (Colour)
Colourless or white
Appearance (Form)
Crystals, crystalline powder
Identification (IR Spectrum)
A) Passes
Identification
B) By TLC
Appearance of Solution
20% aq. solution clear and colourless for 24 hrs.
pH (20% aq. solution)
7.5 – 8.0
Stability
Absorbance
@450nm – NMT0.03 and @287nm – NMT0.10
Heavy metals
NMT 10 ppm
Sulphated Ash
NMT 0.1%
Loss on drying
NMT 0.5%
Assay (On dry basis)
98.5 – 101.0%
Reference
IP 2022
