Antimony Oxide
Antimony oxide, specifically antimony trioxide, is an inorganic compound primarily utilized as a flame retardant synergist in various automotive polymers and textiles.
Overview
In automotive manufacturing, antimony oxide is essential for enhancing the fire safety of interior and exterior components by working synergistically with halogenated flame retardants. It acts by forming a gas-phase radical scavenger that inhibits the combustion process in materials like PVC, polyurethanes, and polyamides. Beyond flame retardancy, it is used as a fining agent in glass and as an opacifying agent for ceramic glazes. Its role is critical for compliance with stringent vehicle fire safety regulations such as FMVSS 302.
Automotive Applications
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Properties
Category
Type
Metal Oxide
Available Colors
Available Forms
Key Properties
- Flame retardant synergist
- High thermal stability
- Chemical resistance
- Opacifying agent
- UV stability
- Smoke suppression
Technical Specifications
Density
5.2 g/cm³
Tensile Strength
Not applicable as a powder additive
Temperature Resistance
Melting point 656°C
Sustainability
Sustainability Rating
Antimony mining is associated with high environmental impact and potential toxicity; its presence in polymers complicates recycling processes and it is monitored under REACH regulations.