Melamine polyphosphate

Melamine polyphosphate (CAS 218768-84-4), also sold under the common name melamine phosphate, is a halogen-free flame retardant used across plastics, textiles, and construction materials.

It functions by releasing phosphoric acid and inert gases under heat, interrupting combustion in both the condensed and gas phases. In engineering thermoplastics such as polyamide and polyurethane, it enables UL 94 V-0 ratings.

This additive supports compliance-driven formulation work at relatively low loading levels. Textile back-coating and paper treatments rely on it to meet fire classification standards for upholstery, curtains, and building insulation facings.

Intumescent coatings for structural steel and timber incorporate it as a char-forming acid source. It activates alongside blowing agents and carbonific components to provide essential protection for various substrates.

Rigid foam and board insulation manufacturers use it to satisfy fire performance requirements in construction applications without introducing halogens. It is supplied as a white powder in various particle size distributions.

These distributions are designed to suit specific compounding or coating processes. Standard commercial grades are available in technical quality, with some suppliers offering specifications aligned to nitrogen and phosphorus targets.

Packaging is typically offered in 25 kg bags or bulk quantities for industrial procurement. This ensures efficient handling and storage for large-scale manufacturing operations across the chemical and plastics industries.