Absorption maximum, λ max: 886nm                

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

Appearance: black powder                

Melting point: 270 – 273°C

Solubility in grams/100 grams of solvent:

            MEK 0.10 grams

            Xylene 0.75 grams

            Cyclohexanone 0.37 grams