The crystal morphology of C. I. Disperse Blue 79 in supercritical carbon dioxide

The crystal growth and morphological changes of C. I. Disperse Blue 79 in supercritical CO2 were investigated using scanning electron microscopy, X-ray diffraction and differential scanning calorimetry. Crystals of the undissolved dye grew in the supercritical fluid and the melting point and crystallinity of this undissolved dye increased with increasing temperature and pressure.