Absorption maximum, lambda max: 676nm

Absorptivity in chloroform: 90 L g-1 cm-1

Appearance: blue powder

Melting point: 215 – 218°C

Solubility in grams/100 grams of solvent:

MEK 4.77 grams

Xylene 0.43 grams

Cyclohexanone 3.53 grams