Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Albemarle SAYTEX 621 Brominated Flame Retardant

Albemarle SAYTEX 621 is a brominated flame retardant designed for thermoplastics and thermosets. It offers high bromine content (78–80%), excellent thermal stability, low volatility, and good compatibility with polymers like ABS, HIPS, and PC/ABS blends. Widely used in electronics and automotive applications to meet stringent fire safety standards including UL94 V-0.
  • albemarle saytex 621 brominated flame retardant_30f888d1
  • albemarle saytex 621 brominated flame retardant_30f888d1

Features Of Albemarle SAYTEX 621 Brominated Flame Retardant

  1. High bromine content (≥78 wt%) for efficient flame inhibition in thermoplastics.

  2. Excellent thermal stability, supporting processing temperatures up to 240 °C without significant decomposition.

  3. Good compatibility with engineering polymers including ABS, HIPS, and PC/ABS blends.

  4. Low volatility and minimal plate-out tendency during extrusion and injection molding.

  5. UL 94 V-0 rated performance at low loadings in standard test configurations.

Typical Applications Of Albemarle SAYTEX 621 Brominated Flame Retardant

  1. Flame-retarded acrylonitrile–butadiene–styrene (ABS) for electronics housings.

  2. High-impact polystyrene (HIPS) used in business machine enclosures and office equipment.

  3. Polycarbonate/acrylonitrile–butadiene–styrene (PC/ABS) blends for automotive interior components.

  4. Thermoplastic housings for power tools and small appliances requiring UL 94 V-0 compliance.

  5. Electrical and electronic (E&E) components subject to IEC 60695 and UL standards.

Specifications Of Albemarle SAYTEX 621 Brominated Flame Retardant

Chemical TypeTribromophenyl allyl ether (TBPAE)-based brominated aromatic compound
Product FormFree-flowing off-white to light tan granules
AppearanceGranular, uniform particle size distribution
Bromine Content≥78.0 wt% (by XRF or combustion analysis)
Melting Range105–115 °C (DSC, heating rate 10 °C/min)
Onset Decomposition Temperature≥240 °C (TGA, N₂, 10 °C/min, 5% weight loss)
Moisture Content≤0.1 wt% (Karl Fischer titration)
Residue on 100 Mesh Sieve≤0.5 wt%


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