sentences:  Also, this positively charged hydrophilic part of the molecule makes it a cationic detergent.Benzethonium chloride is also used to titrate the quantity of sodium dodecyl sulfate in a mixture of sodium dodecyl sulfate, sodium chloride and sodium sulfate, using dimidium bromide-sulphan blue as an indicator.It precipitates as turbidity with anionic polymers in aqueous solution, allowing it to be used to estimate the amount of such polymers present in a sample.