The aqueous to organic phase ratios (A/O) of 1:1, 2:1, 3:1
and 4:1 were used to study its effect on the extraction of dye
under constant conditions. The maximum extraction was
observed at ratio 1:1 (100%) and decreased to 90.1% at 4:1
ration as shown in Fig. 8. The ratio 1:1 yielded high percentage
of dye extraction probably because the free concentration of
sodium dodecylbenzenesulfonate in the organic phase is higher
when the aqueous to organic phase ratio is lower [44].