Appearance (Colour)
White or almost white
Appearance (Form)
Crystalline powder
Solubility
Very slightly soluble in water, freely soluble in (96%) ethanol and dissolves in dilute soluions of alkali hydroxides
Identification (IR Spectrum)
B) Passes
Identification
A) Melting point 148 - 151°C
C) By TLC (in Gallic acid test)
D) By chemical test
Appearance of Solution
Clear and not more intensity coloured than reference solution BY5
Total chlorine
Max. 200ppm
Chloride (CI)
Max. 100ppm
Zinc (Zn)
NMT. 25ppm
Loss on drying
NMT. 0.5%
Sulphated Ash
NMT. 0.1%
Assay (On dry basis)
97.0 -103%
Reference
BP 2020
