Ultra-low dioxane in ethoxy sulphate products

Abstract

The progressive reduction of the permitted content of 1,4-dioxane in ethoxy sulphates presents an increased challenge for surfactant producers. This article discusses technical solutions that can be put in place based on the chemistry of the 1,4-dioxane molecule and its formation mechanism during surfactant production. Desmet Ballestra’s “ultra-low dioxane technology” is discussed in detail, with emphasis on the technical features, advantages, and achievable quality. Technologies for 1,4-dioxane degradation and disposal into water effluent streams are also illustrated.