Metox‑50 Catalyst 100 ml – Marine‑Grade Polyester Resin Hardener (MEKP) Reliable methyl ethyl ketone peroxide catalyst for marine gelcoat & resin curing Volume: 100 ml bottle, standalone hardener for small to medium projects on Irish boats Active oxygen: 9.3–9.8 %, organic peroxide content 33–36 % Density: ~1.17 g/cm³ at 20 °C; viscosity ≈25 mPa·s SADT (self‑accelerating decomposition temperature): 60 °C; storage 0–25 °C Recommended mixing ratio: 1‑2 % for standard cure; up to 3 % for faster gel time (~15‑20 min at 20 °C) Use with cobalt accelerators; suitable for hand & spray lay‑up, gelcoats, coatings & filled/polymer concrete Packaging: clear, colourless MEKP in dimethyl phthalate solvent; slightly water‑soluble (~2 %) Hazard classification: oxidizer (Org. Perox. Type D), corrosive; use stainless steel/PE/PVC/glass tools only The Metox‑50 Catalyst is a marine‑rated methyl ethyl ketone peroxide hardener designed for curing unsaturated polyester resins and gelcoats—ideal for sailing in Ireland’s coastal conditions. Used at 1‑2 % by weight, it delivers a durable, corrosion‑resistant finish, with optional 3 % dosing for faster cure in cooler climates. Compatible with manual and spray lay‑up techniques, it ensures professional-grade results while meeting safety needs—just handle carefully, using appropriate PPE and inert tools to protect against oxidising and corrosive properties. We recommend using this product in conjunction with the following resin and fiberglass: Lloyds Approved Polyester Resin Chopped Strand Matting 450g
