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

Ohara CR-741 Flame Retardant

OharaCR-741FlameRetardantisapartofOhara’sCRserieshalogen-freephosphorus-basedadditiveformainlyPC,PC/ABS,andpolyesterresins.ItoffersUL94V-0ratingatlowloading,excellentthermalstability,transparencyretention,andcompatibilitywithengineeringplastics.
  • ohara cr 741 flame retardant_ae7a07c8
  • ohara cr 741 flame retardant_ae7a07c8

Features Of Ohara CR-741 Flame Retardant

  1. Halogen-free formulation ensuring low smoke density and minimal toxic gas emission during combustion.

  2. Excellent thermal stability, maintaining performance up to 300 °C without significant decomposition.

  3. High phosphorus content enabling efficient char formation and condensed-phase flame inhibition.

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

  5. Low volatility and negligible migration, supporting long-term flame-retardant efficacy in end-use parts.

Typical Applications Of Ohara CR-741 Flame Retardant

  1. Electrical and electronic components requiring UL94 V-0 rating at thin-wall sections (e.g., connectors, switches, housings).

  2. Automotive interior parts such as dashboard modules, junction boxes, and sensor enclosures.

  3. Industrial control systems and power distribution units exposed to elevated ambient temperatures.

  4. LED lighting housings and heat-dissipating fixtures where halogen-free compliance is mandated.

  5. 3C consumer electronics casings including power adapters, charging stations, and smart home devices.

Specifications Of Ohara CR-741 Flame Retardant

Chemical TypeOrganophosphorus compound (phosphinate-based)
Product FormWhite to off-white free-flowing powder
AppearanceFine, homogeneous granular powder
Phosphorus Content (wt%)≥ 28.5%
Moisture Content (wt%, max)0.3%
Particle Size (D90, μm)≤ 35
Thermal Decomposition Onset (TGA, N₂, °C)≥ 290
Key Regulatory ComplianceRoHS 2015/863/EU compliant; REACH SVHC-free


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