Appearance (Colour)
Whiteor almost white , Colourless
Appearance (Form)
Crystalline powder, Crystals
Solubility
Freely soluble in water,slightly in alcohol
Melting Point
It melts about 205°C with decomposition
Identification (IR Spectrum)
A) Passes
Identification
B )By TLC
C) By Chemical test
D) By chemical test
Solubility (Turbidity) 20% aq. solution
Clear on standing standing 24hrs.
Solubility (Colour) 20% aq. solution
Colourless
Appearance of Solution
Solution S is colourless and remains clear on standing 24 hrs.
pH (20% aq. solution)
7.5 - 8.0
Absorbance
A) 287 nm : NMT 0.1 & 450 nm : NMT 0.03
B) 287 nm : NMT 0.15 & 450 nm :NMT 0.03
Ninhydrin - Positive substance
By TLC
Loss on drying
NMT 0.5%
Sulphated Ash
NMT 0.1%
Assay (On dry basis)
98.5 - 101.0%
Reference
BP 2020
