Ko e moʻoni. Kasa lolo fokotuʻu, naʻe faʻu ʻaki pe ʻa e kasa mo e butane, ʻOku ʻi ai foki mo ha ngaahi kasa siʻisiʻi ange hange ko ethane, maʻuʻanga Fakamatala, mo e pentane.
ʻI ha fakalakalaka kimui ni, Kuo transitioned ʻa e tukuʻanga koloa kasa ki ha ukamea makehe cylinders, fokotuʻutuʻu ʻaki e valves ʻe toki lava pe ke fakalele ʻo fakaʻaongaʻi ha hexagonal makehe fakamaʻu sikalu sipana. ʻOku lea ʻaki ʻe he kasa ko ʻeni ʻa e volatility maʻolunga mo e malohi ʻo e, fakamamafaʻi ʻa e fie maʻu ki he cylinders makehe ko ʻeni ke fakapapauʻi ʻoku malu mo toe fakafonu lelei.