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FireGard® HP is a high-purity grade of antimony trioxide (ATO) with lower levels of lead and arsenic, making it ideal for critical applications.
St. Louis Group FireGard® HP is a high-purity grade of antimony trioxide with lower impurities than FireGard® ATO. FireGard® HP has lower levels of lead and arsenic than FireGard® ATO, making it the flame retardant choice for critical applications such as ceramic pigment and glass.
Form: Fine powder
Color: White
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: 0.05% max
Lead: 0.05% max
Iron: 0.004% max
Primary Chemistry:
Antimony trioxide
Low purity or high loading rate of antimony trioxide flame retardants
High level of impurities, including lead and arsenic, in antimony flame retardants
Coatings
Adhesives
Ceramics
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Frictional additive in automotive brake linings
Clarifier for glass
Opacifier for enamels
Coating for titanium dioxide
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