Appearance (Colour)
White to Off-white to Greyish white to Pale yellow
Appearance (Form)
Powder/ Crystals/ Crystalline powder
Solubility (Turbidity) 5% aq. solution
Clear
Solubility (Colour) 5% aq. solution
Colourless to Pale yellow
Assay (NT)
min. 98.0%
pH (1% aq. solution)
2.8 - 4.0
Loss on drying
max. 0.5%
Specific rotation [α] @20°C
-18.0° to -23.0° (C=4, 1M HCl)
Identification Test
By UV- Absorption maxima @279 nm in 0.01M HCl
