Bioaccumulation of the reactive textile dyes, Remazol Blue, Reactive Black and Reactive Red, by the yeast species Candida tropicalis growing in molasses medium was studied in a batch system as a function of initial pH and initial dye concentration. The optimum pH value for bioaccumulation was determined as 3.0 for all the dyes tested. The maximum specific bioaccumulation capacity of C tropicalis was 111.9 mg g(-1) for Remazol Blue, 101.9 mg g(-1) for Reactive Black and 79.3 mg g(-1) for Reactive Red at approximately 700 mg l(-1) initial dye concentration. Higher bioaccumulation percentages were observed at lower concentrations of all the dyes. In general, the increase in dye concentration inhibited the growth of yeast and caused a long lag period. Remazol Blue dye gave a considerably higher dye bioaccumulation percentage by the yeast among the dyes tested.