Butanox® M-50 VRN is the work horse in GRP curingsystems, including a Vanishing Red (VR) system.Medium-reactive, general purpose methyl ethyl ketone peroxide (MEKP) with guaranteed low water content,used for curing unsaturated polyester resins in the presence of a cobalt accelerator at room and elevated temperatures

| Appearance, 20-25 °C | Red liquid |
| Total active oxygen | 8.8-9.0 % |
| Density, 20 °C | 1.180 g/cm | Viscosity, 20 °C | 24 mPa.s |
Butanox® M-50 VRN is a general purpose methyl ethyl ketone peroxide (MEKP) for the curing of unsaturated polyester resins in the presence of a cobalt accelerator at room and elevated temperatures. Butanox® M-50 VRN offers all the advantages of a standard MEKP i. e. Butanox® M-50. The Butanox® M-50 VRN includes a vanishing red indicator system that virtually disappears during cure. The red color is there when you need it i.e. during the mixing step, but will disappear during cure.
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