This study investigates the dispersions of 1 wt.% C.I. pigment violet 23 particles in propylene glycol monomethyl ether acetate (PGMEA) using a supercritical fluid-assisted dispersion process (SFAD). The favorable formulation of dispersants is a blend of 40% AJISPER PB821 and 10% FC-4430 in a PGMEA medium. The SFAD processes holding at the supercritical state are good for improving dispersion. Under favorable conditions, 328.2 K and 20 MPa, the mean size of pigment dispersoid with blended dispersants in PGMEA is as small as 175 nm that meets the required range of 100-200 nm in industrial applications. The TGA analyses indicate the adsorbed amount of blended dispersants (40% PB821 and 10% 4430) on the surface of pigment particles in the PGMEA medium is about 1.77 mg/m(2). Thus, the transmittances, color analyses, and TEM images of pigment dispersoids prove that the SFAD process can disperse pigment particles in PGMEA. (C) 2010 Elsevier B.V. All rights reserved.