Appearance (Colour)
Dark red
Appearance (Form)
Powder
Solubility (Turbidity) 0.1% solution in 5N Ammonia solution
Clear
Solubility (Colour) 0.1% solution in 5N Ammonia solution
Red
Loss on drying
max. 20%
Absorbance (A) of 0.0025% solution in dilute Ammonia solution in a 1cm cell
@518nm
0.30 - 0.40