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  1. Butane - Wikipedia

  2. Butane | Flammable Gas, Fuel, Refrigerant | Britannica

  3. Butane | C4H10 | CID 7843 - PubChem

  4. Butane (C4H10) - Structure, Molecular Mass, Properties & Uses

  5. Butane | Formula, Properties & Application

  6. Butane | Encyclopedia.com

  7. Butane - Energy Education

  8. Butane - Simple English Wikipedia, the free encyclopedia

  9. Butane - NIST Chemistry WebBook

  10. C4H10 - Wikipedia