Trigonox 187-W40

Product Line Organic peroxides

Trigonox® 187-W40 is a polymerization initiator (co)polymerization of vinyl chloride and vinylidene chloride for the production of PVC.

  • Brand

  • Chemical family

    Organic peroxide
  • CAS number

  • Physical form

  • Regional availability

    Africa, Asia, Asia Pacific, China, Europe, Global, India, Latin America, Middle East, North America, Oceania
  • Molecular Weight

  • Concentration

  • Chemical name

    Diisobutyryl peroxide
  • Molecular drawing

    Organic peroxide
  • Applications

    Polymerization of vinyl chloride: Trigonox® 187-W40 is a extremely active initiator especially developed for the low temperature polymerization of vinyl chloride to produce high K-value PVC. Trigonox® 187-W40 can also be used in combination with other peroxides such as Di(2-ethylhexyl) peroxydicarbonate (Trigonox® EHP) to increase reactor efficiency.

Market Segments

Polymer production

Detailed description

Trigonox® 187-W40 is an initiator (40% water-based emulsion) for (co)polymerization of vinyl chloride and vinylidene chloride. Extremely active initiator developed for the low-temperature polymerization of vinyl chloride to produce high K-value PVC.


  • Polymerization initiator


  • PVC
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For more information about Trigonox 187-W40, please contact our technical experts. We look forward to hearing from you.

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