중량분율로서 ethyl alcohol 0.35 %, n-butyl alcohol 0.45 %, n-propyl alcohol 0.31 %, iso-butyl alcohol 5.52 %, n-hexyl alcohol 0.33 %, iso-amyl alcohol 93.04 % 그리고 기타성분을 미량 함유하는 Fusel유를 사용하여 Fusel 유·인산·수로 되는 3성분계의 상호용해도와 tie-line data를 25℃ 대기압하에서 연구하였다. 또한 수 20.5 %, 인산 58.9 % Fusel유 20.6 %로 되는 plait point를 찾았으며 Fusel유가 인산추출용매로서 n-butyl alcohol이나 butyl acetate보다 효과적인 용매임을 알았다.

The mutal solubility and tie-line data were investigated at 25℃ under atomspheric pressure for ternary system of phosphoric acid （solute）, water (dilute) and fusel oil (solvent) consisting of 0.35 wt% ethyl alcohol, 0.45 wt% n-butyl, 0.31 wt% n-propyl alcohol, 0.33 wt% n-hexyl alcohol, 5.52 wt% iso-butyl alcohol, 93.04 wt% iso-amyl alcohol and other in trace. It was found the plait point occurred at the composition of 20.5 wt% water 58.9 wt% phosphoric acid and 20.6 wt% fusel oil. The fusel oil was a more effective solvent for extracting phosphoric acid than n-butyl alcohol or butyl acetate.