Disponil FES 993 Fatty alcohol ether sulphate, sodium salt Cognis Surfactants ADHESIVE Fatty alcohol polyglycol ether sulphate, Na-salt DISPONIL FES 993 is an emulsifier which may be used for the manufacture of finely dispersed, electrolytic stabel and carboxyl groups containing polymer dispersions. Fatty alcohol polyglycol ether sulphate, sodium salt. Used as emulsifier for finely dispersed, carboxyl groups containing polymer dispersions.