Liquid-phase viscosities of the binary systems carbon dioxide-oleic acid, carbon dioxide-methyl myristate, and carbon dioxide-methyl palmitate were determined at 40 degrees C, 50 degrees C, and 60 degrees C and at different pressures up to 126 bar. The change of viscosity with pressure was also recorded for the pure liquids. Experiments were performed by visually observing the motion of small saturated gas bubbles and of glass beads in the liquid within a high-pressure view cell. Viscosities were determined by applying an appropriate law describing flow resistance to the motion of the bubbles and beads for which size and velocity were recorded. All numerical results are given in full detail.