Inhlanganisela yotshwala iwuhlobo lwenhlanganisela yamakhemikhali equkethe i-hydroxyl functional group (-OH) exhunywe ku-athomu ye-carbon.Isetshenziswa kakhulu ekukhiqizeni izincibilikisi, izibaseli, kanye nemithi.Utshwala bungahlukaniswa ngokwesisekelo, okwesibili, kanye nasezingeni eliphezulu ngokusekelwe enanini lama-athomu ekhabhoni axhunywe ku-athomu ye-carbon neqembu le-hydroxyl.Lezi zinhlanganisela zinezinhlobonhlobo zokusetshenziswa kokubili embonini nasempilweni yansuku zonke, okuhlanganisa njengama-antiseptics, ama-disinfectants, nama-preservatives.Zingatholakala naseziphuzweni ezidakayo, ezinjengobhiya, iwayini, nespirit.