Applications

Alcohols-Glycols

By using PEG or high polar liquid phases, sharp peak shapes can be obtained for analyzing alcohols. For trace analysis of multiple alcohols, derivatizing of such alcohols is necessary by using a silylation reagent. For trace analysis of methanol, PEG1000 combined with Uniport or Flusin T is suitable. Gaskuropack 54, which is made of porous polymer beads, is often used for analysis of lower alcohols. It also can be used for an analysis of residual solvents in pharmaceuticals, which is extracted with water (refer to Fig. 1). Gaskuropack 55 can be used for analyzing glycols. Symmetrical peaks can be obtained by combining Unisole 30T and Flusin P for higher alcohols. For trace analysis of multiple alcohols, derivatizing of such alcohols is necessary by using a silylation reagent. Gaskuropack 54, which is made of porous polymer beads, is often used for analysis for lower alcohols. Gaskuropack 55 can be used for analyzing glycols. Symmetrical peaks can be obtained by combining Unisole 30T and Flusin P. For higher alcohol analysis, PEG-HT can be used. When the boiling point range of the sample is wide or isomers are included, we recommend using a capillary column. For analysis of impurities in methanol, sorbitol can be used as a liquid phase, which delays the elution of methanol (Fig. 2).