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  1. Propylene - Wikipedia

  2. Propylene | Gas, Petroleum, & Glycol | Britannica

  3. Propylene - Chemical Safety Facts

  4. Propylene | Formula, Properties & Application

  5. Propylene - Wikiwand

  6. Propylene glycol | Description, Formula, Production, & Uses

  7. Propylene Definition & Meaning - Merriam-Webster

  8. Propylene | Encyclopedia.com

  9. Propylene Formula & Structure - Purdue University

  10. Propene - NIST Chemistry WebBook