Absorption maximum, λ max: 949nm                

Absorptivity in chloroform: 62 L g^-1 cm^-1

Appearance: black powder                

Melting point: 282 – 285°C

Solubility in grams/100 grams of solvent:

            MEK 1.77 grams

            Xylene 0.09 grams

            Cyclohexanone 1.36 grams