Melapur MC Salt of melamine and cyanuric acid 37640-57-6 Ciba Flame and Smoke Retardants >> Melamine based Polyamides (PA) PU - Thermoplastic, TPU Halogen-free, melamine cyanurate Used for flame retarding polyamides and thermoplastic polyurethanes Suits particularly for electrical and electronic applications. Offers low addition level, good mechanical properties, low specific gravity Gives low smoke density, low smoke toxicity and low corrosion Halogen-free, melamine cyanurate. Used for flame retarding polyamides and thermoplastic polyurethanes. Suits particularly for electrical and electronic applications. Offers low addition level, good mechanical properties, low specific gravity. Gives low smoke density, low smoke toxicity and low corrosion.