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

Clariant Exolit OP 550 Flame Retardant

Clariant Exolit OP 550 is a halogen-free, phosphorus-based flame retardant from the Exolit OP series, designed for polyolefins and engineering plastics. It offers excellent thermal stability, low smoke emission, and good processability while meeting stringent fire safety standards like UL 94 V-0 and EN 13501-1.
  • clariant exolit op 550 flame retardant_859822b9
  • clariant exolit op 550 flame retardant_859822b9

Features Of Clariant Exolit OP 550 Flame Retardant

  1. Halogen-free phosphorus-based flame retardant offering excellent fire safety performance.

  2. Designed for efficient dispersion and compatibility in polyolefin compounds, especially PP and PE.

  3. Low smoke and low toxicity during combustion, supporting improved fire safety and environmental compliance.

  4. Good thermal stability up to 300 °C, enabling processing via extrusion and injection molding.

  5. Non-migrating formulation ensures long-term retention of flame-retardant properties in finished parts.

Typical Applications Of Clariant Exolit OP 550 Flame Retardant

  1. Electrical and electronic housings requiring UL 94 V-0 classification.

  2. Automotive interior components such as trim, dashboards, and air ducts.

  3. Wire and cable jacketing materials for low-smoke, halogen-free applications.

  4. Consumer appliance casings including power tools and kitchen appliances.

  5. Industrial polymer parts where regulatory compliance with RoHS and REACH is mandatory.

Specifications Of Clariant Exolit OP 550 Flame Retardant

Chemical TypeOrganophosphorus compound
Product FormFree-flowing white granules
AppearanceOff-white to light beige granules
Density (23 °C)1.45–1.55 g/cm³
Melting Range280–300 °C (DSC, onset)
Moisture Content< 0.5 wt% (as supplied)
pH (1% aqueous suspension)6.5–7.5
Primary ApplicationsPolypropylene (PP), polyethylene (PE), and thermoplastic elastomers (TPE)


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