Absorption maximum, lambda max: 596nm                

Absorptivity in acetone: 134 L g^-1 cm^-1

Appearance: violet powder                 

Melting point: 217 – 220°C

Solubility in grams/100 grams of solvent:

            MEK 8.93 grams

            Xylene 0.8 gram

            Cyclohexanone 5.62 grams