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

Arichem STB-FR (F-531) Flame Retardant

Arichem STB-FR (F-531) is a brominated flame retardant from Arichem’s STB-FR series, designed for high-performance polymer applications including ABS, HIPS, and PC/ABS blends. It offers excellent thermal stability, low volatility, and superior flame suppression per UL94 V-0 standards. Compatible with common processing methods, it ensures consistent dispersion and minimal impact on mechanical properties.
  • arichem stb fr f 531 flame retardant_41845746
  • arichem stb fr f 531 flame retardant_41845746

Features Of Arichem STB-FR (F-531) Flame Retardant

  1. Halogen-free formulation for reduced smoke toxicity and corrosive gas emission during combustion.

  2. Excellent thermal stability, maintaining performance up to 300 °C in polymer processing.

  3. Good compatibility with engineering thermoplastics including polyamide (PA6/PA66) and polybutylene terephthalate (PBT).

  4. Low migration tendency, ensuring long-term flame-retardant efficacy and surface integrity.

  5. UL 94 V-0 rated at 1.6 mm thickness when compounded at recommended loading levels.

Typical Applications Of Arichem STB-FR (F-531) Flame Retardant

  1. Electrical and electronic housings requiring RoHS-compliant flame retardancy.

  2. Automotive interior components such as connectors, sensor housings, and control modules.

  3. LED lighting enclosures and heat-dissipating structural parts.

  4. Industrial automation casings exposed to elevated ambient temperatures.

  5. 3C consumer electronics where low-smoke, zero-halogen performance is mandated.

Specifications Of Arichem STB-FR (F-531) Flame Retardant

Chemical TypeOrganophosphorus-based intumescent flame retardant
Product FormFree-flowing white to off-white granular powder
AppearanceUniform granules, no visible impurities
Density (25 °C)1.45–1.52 g/cm³
Moisture Content≤ 0.3 wt% (by Karl Fischer titration)
Thermal Decomposition Onset (TGA, N₂, 10 °C/min)≥ 280 °C
Primary ApplicationsEngineering thermoplastics: PA6, PA66, PBT, PC/ABS blends
Key FeaturesHalogen-free, UL 94 V-0 compliant, REACH & RoHS 2.0 compliant


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