The ozonation of a polyethoxylated alcohol (typical of one type of det
ergent) mixture was performed in aqueous solution under different cond
itions of pH, reaction time and hydrogen peroxide addition. Surfactant
degradation was monitored by TOC measurements. The optimal degradatio
n conditions were found to be at pH = 7.5 with hydrogen peroxide addit
ion. Inspection of the reaction products was carried out by GC-MS and
GC-FTIR analysis of the silylated mixtures. The main oxidation product
s of ethoxylated alcohols are dicarboxylic acids.