Melamine Hydrobromide (MHB) exhibits strong thermal decomposition properties, releasing bromine radicals that disrupt combustion processes, making it an effective flame retardant.
- English name: 1,3,5-TRIAZINE-2,4,6-TRIAMINEHYDROBROMIDE; common name is Melamine hydrobromide
- Melamine hydrobromide CAS number: 29305-12-2
- Melamine hydrobromide Molecular formula: C₃H₇BrN₆
- Melamine hydrobromide Molecular weight: 207.032
Chemically, Melamine Hydrobromide is a crystalline salt with good solubility in water and certain polar solvents. Its reactivity is relatively low under normal conditions, but it can interact with strong oxidizing agents. When incorporated into polymer matrices, it enhances thermal stability and fire resistance.
The compound combines the high nitrogen content of melamine with bromine from hydrobromic acid. This composition gives it dual functionality: nitrogen promotes char formation, while bromine acts as a flame inhibitor by releasing hydrogen bromide (HBr) at elevated temperatures. HBr scavenges free radicals in the combustion process, effectively disrupting the flame propagation.
Melamine hydrobromide is thermally stable under moderate conditions but decomposes at high temperatures, releasing non-combustible gases. These gases dilute oxygen in the combustion zone, enhancing fire suppression. The compound is also slightly hygroscopic, meaning it can absorb moisture from the air, which may affect its handling and storage.
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