Butanng dng[sa]Dng lm nguyn liu iu ch butaien, isobutilen, xng tng hp, vv. Hn hp B vi propan c dng rng ri lm nhin liu; l thnh phn ch yu ca kh du m ho lng LPG (Liquified Petroleum Gas). Vit Nam, LPG bt u c sn xut t nm 2000 (ti nh my ch bin kh Ph M, tnh B Ra - Vng Tu) t kh ng hnh m Bch H (xt. Kh du m); sn lng LPG nm 2002 khong 300 nghn tn nhng vn cha p ng kp nhu cu tng vi tc rt nhanh ca th trng trong nc.