Tunanin ButyL Roba shine kashe-farin roba-kamar m tare da yawan 0.92G \ / cm3. Yana da kamshi, wanda ke cikin ruwa a cikin ruwa, kuma mai narkewa a cikin hexane da chloroform. Hakanan samfurin yana da ƙarancin iska, mai kyau Airthight, da kuma kyakkyawan juriya. Ozone juriya, juriya na sinadarai, rufin wutar lantarki, juriya, juriya na zafi, hutun zafi da sauran halaye.