Cadox M-50a VRN

Back to search

Organic peroxide

Organic peroxide

Cadox M-50a VRN is a special purpose catalyst including a Vanishing Red Indicator System used for curing promoted unsaturated polyester resins at room temperature. This highly reactive catalyst provides a fast gel time and with a red indicating dye which allows the user to follow the cure by color.

  • Product name

    Cadox M-50a VRN
  • Chemical family

    Organic peroxide
  • CAS number

  • Physical form

  • Regional availability

    Latin America, North America
  • Chemical name

    Methyl ethyl ketone peroxide
  • Applications

    Cadox M-50a VRN is a special purpose catalyst for the room temperature cure of promoted unsaturated polyester resins. Cadox M-50a VRN has a high MEKP monomer content which provides reduced cure times in most resin systems. The vanishing red indicator offers all the advantages of a red MEKP without affecting the color of the final cured part. The red is there when you need it, but not in the finished product. Visualize Hot & Cold Spots, Shrinkage Problems, Mass Effects, Thermal Effects of fillers, the Optimal Time to Trim Parts and Dead Flow Zones in applications like Vacuum Infusion.

Market Segments

Thermoset composites

Detailed description

Highly reactive industry standard MEKP with vanishing red cure indicator for curing promoted unsaturated polyester matrices at room temperature.


  • Curing agent


  • Engineered Stone,
  • Body and Spray Fillers,
  • Centrifugal casting,
  • Coatings,
  • Continuous Laminating,
  • Resin Transfer Molding