Absorption maximum, λ max: 1054nm              

Absorptivity in chloroform: 45 L g^-1 cm^-1

Appearance: dark brown powder             

Melting point: 260 – 263°C

Solubility in grams/100 grams of solvent:

            MEK 0.34 grams

            Xylene 0.04 grams

            THF 0.56 grams

            Cyclohexanone 0.43 grams