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  1. Propylene - Wikipedia

  2. Propylene | CH2CHCH3 | CID 8252 - PubChem

  3. Propene - Simple English Wikipedia, the free encyclopedia

  4. Propene (Propylene) - Essential Chemical Industry

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

  6. Propylene - Chemical Safety Facts

  7. Propene | Formula, Properties & Application

  8. Propene - NIST Chemistry WebBook

  9. What is Propylene? (with pictures) - AllTheScience

  10. Propene - (Organic Chemistry) - Vocab, Definition, Explanations