Absorption maximum, lambda max: 500nm                

Absorptivity in acetone: 28 L g^-1 cm^-1

Appearance: red powder             

Melting point: 170 – 175°C

Solubility in grams/100 grams of solvent:

            MEK 1.12 grams

Xylene 1.53 grams

            Cyclohexanone 1.64 grams