The effect of time and stirring on product white colorant from titanium dioxide

White Colorant is the main raw material in the paint making process in the depots. It made from TiO₂ pigment. The process of making white colorant requires a great stirring time and energy to mix the materials such as binders, pigments, solvents, and additives. The aim of this study is to get the optimum stirring time and speed from mixing the materials needed to obtain white colorant from TiO₂ pigment that meet the specification desired by paint Factory in Tangerang that is particle size of TiO₂ (10 μm to 30 μm), viscosity 1000 cps to 6000 cps, total solids 79 % to 83 %, DE color is 0.5, and CR is 80 % to 100 %. Variations made were stirring speed (1000, 1100 and 1200) rpm and stirring time(10, 15, 20, 25 and 30) minutes. The optimum results obtained are particle size of 15 μm, viscosity 1900 cps, total solids 81.81 %, color DE 0.49 and color CR 98.12 % at stirring condition 1200 rp min 15 minutes. (author)