Se. Friberg et al., A REVERSIBLE EXTRACTION PROCESS OF PHENETHYL ALCOHOL, A FRAGRANCE, Industrial & engineering chemistry research, 35(9), 1996, pp. 2856-2859
An extraction/separation process far phenethyl alcohol is described. T
he extraction takes place into a solution of common hydrotrope, sodium
xylene sulfonate, and the separation is achieved by addition of water
to the water hydrotrope/phenethyl alcohol solution. The system was op
timized for the ratio of the amount amount extracted fragrance to amou
nt of water that needs to be evaporated for each extraction/separation
cycle.