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  1. Butane - Wikipedia

  2. What is the Difference Between nButane and Butane - SOLVENT DIRECT

  3. Understanding the Difference: Butane Vs. n-Butane - Propane HQ

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

  5. Butane - NIST Chemistry WebBook

  6. Butane - Encyclopedia.com

  7. n-Butane | C4H10 - ChemSpider

  8. Butane - Wikiwand

  9. Butane - NIST Chemistry WebBook

  10. Butane - NIST Chemistry WebBook