Absorption maximum, λ max: 859nm                

Absorptivity in chloroform: 64 L g^-1 cm^-1

Appearance: dark brown powder             

Melting point: 320 – 323°C

Solubility in grams/100 grams of solvent:

            THF 0.64 grams

            DMF 0.39 grams

            Cyclohexanone 0.61 grams