Abstract: A composition suitable for use as dyeing or textile auxiliary and which comprises a mixture of acid esters of adducts of ethylene oxide and propylene oxide with fatty alcohols having not less than 6 carbon atoms, at least one component of which composition is an acid ester of the formula ##STR1## wherein s is 3 to 10, p is 5 to 15, R is an aliphatic radical of not less than 6 carbon atoms; one of Z.sub.1 and Z.sub.2 is methyl and the other is hydrogen, and X is the acid radical of a low molecular aliphatic dicarboxylic acid, in particular maleic acid. This composition is used in particular as low foaming wetting agent and padding auxliary for pretreating or dyeing cellulosic fibre materials.