Absorption maximum, λ max: 858nm                

Absorptivity in chloroform: 57 L g^-1 cm^-1

Appearance: dark blue powder             

Melting point: 284 – 288°C

Solubility in grams/100 grams of solvent:

            MEK 0.28 grams

            Xylene 0.19 grams

            THF 1.42 grams

            Cyclohexanone 0.38 grams