Methane (CH4) iskar gas ce mara wari kuma mara launi kuma tana aiki azaman babban tushen mai. Yana kunna atomatik a kusan 538 ° C, konewa kai tsaye lokacin da aka kai takamaiman yanayin zafi.
Siffata da harshen harshen wuta, Methane zai iya kaiwa ga kololuwar yanayin zafi a kusa da 1400 ° C. Bayan hadawa da iska, ya zama m tsakanin 4.5% kuma 16% maida hankali. A ƙasa wannan bakin kofa, yana ƙonewa sosai, yayin sama, yana ɗorewa fiye da ƙasa konewa.