Fashewar Shenhai-Hujja
Matsakaicin nauyin kwayoyin iska shine 29, yin iskar gas tare da nauyin kwayoyin da ya fi girma 29 nauyi fiye da iska.
Gas mai ƙonewa na kwayoyin da ke da nauyi fiye da iska sun haɗa da propane, butane, propylene, butadiene, acetylene, cyclopropane, dimethyl ether, da kuma ethylene oxide. Gas masu ƙonewa marasa ƙarfi sun fi ƙarfin kewaye da iska hydrogen sulfide, phosphine, da silane.