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FireGard® ATO is a flame retardant and synergist used with brominated or chlorinated compounds to reduce flammability.
FireGard® ATO is an antimony trioxide used as a fire retardant (FR) in the presence of a halogen source. In PVC compounds, it can be used as the primary FR without the need for a halogen-based flame retardant. In other polymers without halogens, a chlorinated or brominated compound must be added to obtain flame retardancy.
Antimony trioxide (ATO) does not melt or vaporize during normal use and will not form vapors unless heated to extremely high temperatures.
FireGard® ATO is suitable for applications where a high tint is acceptable.
Appearance: Fine, white powder
Specific gravity: 5.5
Average particle size: 0.8 to 1.3 microns
Sieve residue < 325 mesh: ≤0.10%
Antimony trioxide: 99.8% min
Arsenic: 0.10% max
Lead: 0.10% max
Iron: 0.004% max
Primary Chemistry: Antimony trioxide (ATO) - Sb2O3
Stand-alone antimony flame retardant for PVC formulations Melting or vaporization issues with the use of antimony-free fire retardants
Coatings Adhesives Ceramics Catalyst for PET manufacture Frictional additive in automotive brake linings Clarifier for glass Opacifier for enamels Coating for titanium dioxide
Flame retardants are used as reactive chemical additives in combustible polymers to prevent, delay, or slow the growth of a fire.
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