Melamine Cyanurate

Melamine Cyanurate is a halogen-free flame retardant that can be used in thermoplastic urethanes (TPUs) for electrical wire coatings.

Melamine Cyanurate

Properties of Melamine Cyanurate

Melamine Cyanurrate
Melamine Cyanurate is a salt comprised of Melamine and Cyanuric acid, which has unique physical properties:

  • heat stability at 300º.
  • held together by an extensive two-dimensional network of hydrogen bonds between Melamine and Cyanuric acid, which network forms layers such as graphite.


Melamine Cyanurate MC-4500 MC-4250 MC-6150
Water Content (%) <0.2 <0.2 <0.5
Free Melamine (%) <0.3 <0.3 <0.3
Free Cyanuric Acid (%) <0.2 <0.2 <0.2
Particle Size D50 (μm) <10 <4 <3
Particle Size D98 (μm) <60 <40 <20
Bulk Density (ton/m3) 0.3-0.4 0.1-0.3 0.1-0.3

Note: These are typical properties of Melamine Cyanurate (C3H6N6 – C3H3N3O3).