毛细管气相色谱法分析正丙醇

The Analysis of n-propanol by Capillary Gas Chromatography

正丙醇是生产丙戊酸钠、丙硫咪唑及作为生产酯类、醚类、醇类和黄原酸盐等医药化工的重要有机原料,我国尚不生产,靠国外进口。在产品质量检查中,国内化学试剂采用馏程法馏程范围96～98℃,馏出体积大于95％,我们在分析正丙醇过程中,发现用馏程法测其含量无法保证质量,为此采用毛细管气相色谱法对正丙醇进行了定性定量分析,

A GC method with Capillary column has been developed to replace the distillation method used for inspection of the quality of n-propanol.It has been found that the purity of n-propanol may be as low as 85% while it still can pass the inspection with distillation,it is because the major impurity is n-butanol which has a B.P.close to that of n-propanol.