Cetearyl alcohol polyether-25（CETETH-25）It is a non-ionic emulsifier obtained by the addition of natural saturated fatty alcohols and ethylene oxide. It can be used as a leveling agent, dyeing retarder, glass fiber industry emulsifier, chemical fiber spinning oil component, emulsifier for cosmetics and ointment production in the printing and dyeing industry.

CETETH-25Due to the lack of characteristic chromophores in its structure, traditional liquid chromatography is used-The UV detector method is relatively difficult. This experiment used liquid chromatography-Evaporative light scattering detector (a universal liquid chromatography detector)HPLC-ELSD, establishedCETETH-25The separation detection method has achieved good separation results, andCETETH-25InELSDThere is a clear signal response on the detector, which can meet the requirementsCETETH-25The need for daily testing.