Appearance (Colour)
Dark red to Dark green to Black
Appearance (Form)
Powder or Crystalline powder
Solubility (Turbidity) 5 ppm in Water pH 7.0
Clear
Loss on drying
max. 10%
Dye content
20-30%
Suitability for pH at pH 3.5(red/orange)
Passes test
Suitability for pH at pH 6.5(blue/violet)
Passes test
