Cadox D-50 VR

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Organic peroxide

General purpose MEKP with vanishing red cure indicator.

  • Product name

    Cadox D-50 VR
  • Chemical family

    Organic peroxide
  • CAS number

  • Physical form

  • Regional availability

    Latin America, North America
  • Chemical name

    Methyl ethyl ketone peroxide
  • Applications

    Cadox D-50 VR is a special purpose catalyst for the room temperature cure of promoted unsaturated polyester resins. Cadox D-50 VR has a low hydrogen peroxide content which provides improved curing of vinyl ester resins. Cadox D-50 VR also has a high MEKP monomer content which may provide reduced cure times in some resin systems.  Cadox D-50 VR offers all the advantages of a red MEKP, except red parts. The VR series of products includes a red indicator system that virtually disappears during cure. The red is there when you need it, but not in the finished product. Key features are: Indicates initiator presence 

Market Segments

Thermoset composites

Detailed description

Special purpose catalyst (including a Vanishing Red Cure Indicator System) used for curing gel coats and promoted unsaturated polyester resins at room temperature. Low-hydrogen peroxide content reduces gel-coat porosity and provides improved curing of vinylester resins.


  • Curing agent