Melamine phosphate is a chemical compound made by reacting melamine with phosphoric acid. The chemical formula is C₃H₆N₆·H₃PO₄.

Melamine phosphate often used as a flame retardant in polymer materials due to its ability to release non-flammable gases when heated. This helps to suppress combustion by forming a protective char layer on the surface of the material, which acts as a barrier to heat and oxygen.

Melamine phosphate chemical structure

  • Melamine: Nitrogen-containing heterocyclic compound with the chemical formula C₃H₆N₆.
  • Phosphoric acid: Inorganic acid with the chemical formula H₃PO₄.

Melamine phosphate physical properties

  • Appearance: White powder.
  • Solubility: Slightly soluble in water, almost insoluble in organic solvents.

Melamine Phosphate

Melamine phosphate application areas

  • Flame retardant: Used in plastics, rubber, textiles, etc., to play a flame retardant role by releasing nitrogen and phosphoric acid.
  • Fertilizer: As a slow-release nitrogen fertilizer, it provides nitrogen and phosphorus required by plants.
  • Other uses: Used in the production of flame-retardant coatings, adhesives, etc.

Melamine phosphate is particularly effective in polymers like Nylon and other engineering plastics, where it enhances fire resistance without significantly impacting the material’s mechanical properties. It is commonly used in conjunction with other flame retardants or in formulations designed to meet stringent fire safety standards.

Safety

  • Toxicity: Low toxicity, but excessive intake may be harmful.
  • Environmental impact: Need to be properly handled to avoid pollution.

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