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Appearance
|
Pale beige to brown powder
|
|
Dye content (UV-Vis) (on dry bassis)
|
Min 80%
|
|
Absorption maxima in acetonitrile
|
290 - 292 nm
|
|
Identity (IR)
|
Passes test
|
|
Loss on drying (1 g, 105°C, 3 hrs)
|
Max 10.0%
|
|
Solubility in ethanol
|
1 mg/ml
|
|
Colour of solution
|
Yellow to Orange to Brown
|