Isibabule esiyisisekelo (S) esiqoqwe emigodini yentaba-mlilo, emithonjeni eshisayo, noma ezindaweni ezingaphezulu komhlaba. Kuyinto eqinile ephuzi ecacile, ephukayo kalula futhi enephunga elihlukile. Isetshenziselwa ukuqinisa irabha, ukwenza i-sulfuric acid, njengesibulala-sikhunta, nakubhulakhi omnyama. Incibilika ku-115 °C futhi ivutha ngelangabi eliluhlaza okwesibhakabhaka ikhipha igesi ye-SO₂.