Albemarle SAYTEX 621 is a premium brominated polystyrene flame retardant delivering superior fire protection for engineering plastics. This low-dust pellet formulation combines 64.6% bromine content with excellent processing characteristics, making it particularly effective for thin-walled PBT components. Its non-blooming nature and thermal stability ensure long-term performance in demanding applications while meeting strict environmental standards as a decabromine-free solution.
Optimal Protection - 64.6% bromine content for maximum flame retardancy
Enhanced Processability - Low viscosity for complex mold filling
Material Integrity - Preserves PBT's mechanical strength
Surface Quality - Prevents blooming in finished products
Sustainable Choice - Environmentally compliant formulation
Electronic Housings - Connectors and sockets
Automotive Components - Sensor housings and brackets
Electrical Systems - Switchgear and circuit breakers
Industrial Parts - Pump components and valves
Consumer Products - Power tool casings
Appearance | White to off - white pellets |
Bromine Content (Theoretical) | 64.6% |
Softening Point | 220°C |
Glass Transition Temperature (Tg) | 164°C |
Bulk Density | 73.5 lb/ft³ (1180 kg/m³) |
Solubility in Water (by weight at 25°C) | <1.0% |
Solubility in Methanol (by weight at 25°C) | <1.0% |
Solubility in Toluene (by weight at 25°C) | 52.0% |
Solubility in Styrene Monomer (by weight at 25°C) | 49.4% |
1% Weight Loss Temperature (TGA, N₂, 10°C/min) | 347°C |
5% Weight Loss Temperature (TGA, N₂, 10°C/min) | 379°C |
10% Weight Loss Temperature (TGA, N₂, 10°C/min) | 388°C |
50% Weight Loss Temperature (TGA, N₂, 10°C/min) | 412°C |
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E-mail: wangxingqiang@ericwchem.com
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