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

Albemarle Martinal ON-320 Aluminum Hydroxide Flame Retardant

Albemarle Martinal ON-320 is a high-purity aluminum hydroxide flame retardant from the Martinal series, engineered for superior thermal stability and smoke suppression in polymers. It offers excellent dispersion, low abrasivity, and halogen-free flame retardancy—ideal for cables, building materials, and automotive plastics requiring UL94 V-0 compliance and enhanced processability.
  • albemarle martinal on 320 aluminum hydroxide flame retardant_7e32b8e0
  • albemarle martinal on 320 aluminum hydroxide flame retardant_7e32b8e0

Features Of Albemarle Martinal ON-320 Aluminum Hydroxide Flame Retardant

  1. High-purity aluminum hydroxide with controlled particle size distribution for optimal dispersion in polymer matrices.

  2. Endothermic decomposition at ~180–200 °C, releasing water vapor to cool the substrate and dilute flammable gases.

  3. Halogen-free and low-smoke formulation, supporting compliance with stringent fire safety and environmental regulations (e.g., RoHS, REACH).

  4. Surface-treated with proprietary silane chemistry to enhance compatibility with polyolefins, PVC, and thermosets.

  5. Low abrasivity and excellent thermal stability during compounding and extrusion processing.

Typical Applications Of Albemarle Martinal ON-320 Aluminum Hydroxide Flame Retardant

  1. Flame-retarded wire and cable compounds (LSZH – Low Smoke Zero Halogen).

  2. Fire-safe building materials including insulation foams, ceiling tiles, and decorative panels.

  3. Transportation interiors such as automotive seating foams, dashboards, and railcar components.

  4. Electrical enclosures and housings for consumer electronics and industrial equipment.

  5. Thermoplastic elastomers (TPEs) and flexible PVC requiring UL 94 V-0 or V-1 rated performance.

Specifications Of Albemarle Martinal ON-320 Aluminum Hydroxide Flame Retardant

Chemical TypeAluminum hydroxide, Al(OH)₃
Product FormFree-flowing white powder
AppearanceWhite, odorless, non-toxic powder
Primary ApplicationsHalogen-free flame retardant for polymers
Key FeaturesSurface-modified, low moisture content, narrow PSD
Decomposition Onset Temperature≥180 °C (by TGA, 10 °C/min, air)
Loss on Drying (105 °C, 2 h)≤0.5 wt%
pH (10% aqueous slurry)7.5–8.5


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