Absorption maximum, λ max: 924nm                

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

Appearance: brown powder               

Melting point: 310 – 315°C

Solubility in grams/100 grams of solvent:

            MEK 0.22 grams

            Xylene 2.24 grams

            THF 4.49 grams

            Cyclohexanone 1.61 grams