Melamine Cyanurate MC-50 (Medium Grade, D50 ≤15μm)
Número CAS: 37640-57-6
MC-50 is a medium particle size grade of Melamine Cyanurate (MCA) with D50 ≤15μm and D98 ≤50μm, specifically optimized for PA6 and PA66 filled (glass fiber reinforced or mineral-filled) flame-retardant compounds. The larger particle size versus fine grades reduces system viscosity during compounding, improves throughput, and is particularly well suited to GF-PA systems where ultra-fine particles can cause excessive viscosity or fiber breakage. MCA (C3H6N6·C3H3N3O3) provides halogen-free flame retardancy through endothermic decomposition, gas-phase dilution by melamine sublimation, and anti-drip action from cyanuric acid in the condensed phase. Purity ≥99.5% with very low melamine residue (≤0.01%) minimizes die buildup and bloom. High thermal stability (1% decomposition ≥310°C) ensures minimal degradation during high-temperature GF-PA66 compounding. ROHS and EU REACH registered.
Especificaciones Técnicas
| Whiteness | ≥ 97% |
| Appearance | White crystalline powder |
| Bulk Density | ≥ 0.3 g/cm³ |
| Dispersibility | Exceptionally good |
| Melamine Residue | ≤ 0.01% |
| Moisture Content | ≤ 0.2% |
| Molecular Formula | C3H6N6·C3H3N3O3 |
| Particle Size D50 | ≤ 15 μm |
| Particle Size D98 | ≤ 50 μm |
| pH (10% suspension) | 5.0–7.0 |
| Purity (MCA content) | ≥ 99.5% |
| Cyanuric Acid Residue | ≤ 0.3% |
| 1% Decomposition Temperature | ≥ 310 °C |
Aplicaciones
- Glass fiber reinforced PA6 FR compounds (GF-PA6)
- Glass fiber reinforced PA66 FR compounds (GF-PA66)
- Mineral-filled PA flame-retardant formulations
- PA6/PA66 with high filler loading requiring lower melt viscosity
- PBT glass fiber reinforced FR systems
- High-throughput compounding lines for FR engineering plastics
Características Principales
- Optimized for GF-reinforced PA6/PA66 — medium D50 reduces melt viscosity vs fine grades
- Halogen-free — compliant with ROHS, EU REACH, and OEKO-TEX requirements
- High thermal stability ≥310°C — no foaming or decomposition during high-temp GF-PA processing
- Very low melamine residue (≤0.01%) — minimizes die buildup and surface bloom
- Purity ≥99.5% with tight specification control
- Multi-mechanism FR: endothermic + gas dilution + anti-drip in condensed phase
- High whiteness (≥97%) maintains aesthetics of natural-colored compounds
- Insoluble in water and organic solvents — long-term stability in compound
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CAS Number
37640-57-6
Category
Químicos Retardantes de LlamaAvailability
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