对仲辛醇的几种样品进行了色－质联机分析、红外光谱分析和精馏分离．利用精馏法对几种仲辛醇绘制了沸腾曲线，找出了影响萃钨有机相分相速度的关键馏分是仲辛醇中的高沸点物．分相性能差的仲辛醇经分离处理后能满足萃取的工艺要求． Several samples of secondary octanol were subjected to color-mass online analysis, infrared spectrum analysis and rectification separation. The boiling curve of several sec-octanol was drawn by using the method of rectification. The key fraction that affects the phase separation velocity of the extracted tungsten was found to be the high boiling point in the secondary octanol. Secondary octanol with poor separation performance can meet the technological requirements of extraction after being separated and processed.