Absorption maximum, λ max: 892nm                

Absorptivity in chloroform: 50 L g^-1 cm^-1

Appearance: black powder                

Melting point: 237 – 240°C

Solubility in grams/100 grams of solvent:

            Xylene 0.83 grams

            MEK 0.91 grams

            Cyclohexanone 2.44 grams