Abstract: This invention relates to a process for preparing a sulfophenethylsiloxane having either of the following formulae: ##STR1## comprising: (a) adding in essentially equimolar ratio chlorosulfonic acid and a chorosilane having either of the following formulae: ##STR2## wherein R of formulae I, II, III, and IV is individually hydrogen, halogen, or an alkyl radical having 1 to 4 carbon atoms; R.sub.1 is an alkylene radical having 2 to 5 carbon atoms; R.sub.2 is R of ##STR3## with the proviso that at least one R.sub.2 be ##STR4## R.sub.3 is R or --R.sub.1 SiCl.sub.3 with the proviso that at least one R.sub.3 be --R.sub.1 SiCl.sub.3 and n is at least 1, m is 1 or 2; continuously through a mixing nozzle in form of small droplets into a continuous stream of air with a temperature of from about 80.degree. C. to about 150.degree. C. in a reaction vessel to form a solid intermediate and(b) hydrolyzing said intermediate with water.