Melamine cyanurate

Melamine cyanurate (CAS 37640-57-6), commonly abbreviated as MCA, is a halogen-free flame retardant formed from the equimolar complex of melamine and cyanuric acid.

Where is Melamine cyanurate used?

• Plastics and textiles: meeting fire safety standards
• Engineered materials: avoiding regulatory concerns of halogenated systems
• Polyamide compounds: dominant flame retardant additive enabling UL 94 V-0 ratings at low loading levels
• Glass-filled and unfilled nylon grades
• Technical fabrics for automotive interiors, workwear and aerospace seating
• Building and construction: coatings, sealants and insulation materials
• Electrical and electronic components rely on MCA where halogen-free compliance is a procurement or regulatory requirement.

Commercial specifications

• White powder with particle size distributions optimized for different compounding processes
• Specifications typically defined by purity, d50 particle size and bulk density
• Surface-treated variants for improved dispersion in polyamide and other polymer matrices