The Universal Selection Source: Polymer Additives

Techno Brief: Melamine Compounds as Flame Retardants

Melamine based flame retardants represent a small but fast growing segment in the flame retardant market. Find all about Melamine Compounds Flame Retardants in this techno brief: generalities, mode of actions, strengths & limitations as well as formulation guidelines!

Pure melamine based Flame Retardants

Melamine (2,4,6-triamino-1,3,5 triazine) chemical structureMelamine (2,4,6-triamino-1,3,5 triazine, CAS nr. 106-78-1) is a white crystalline powder with a melting point of approximately 354°C and a density of 1.573 grams/cc.

Far below its melting point, already at >200°C, melamine is known to vaporize or sublime (diluting the fuel gases and oxygen near the combustion source).

When sublimating it absorbs an amount of heat of 29 kcal/mole, when decomposing it absorbs an amount of heat of ~470 kcal/mole, thus acting as a heat sink in fire situations.

Additionally melamine exhibits low solubility in water and most other solventsexcellent UV absorption above 250nm and a pH of 8.1 .

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