FireGard® SA is an antimony synergist that can be used in combination with halogenated flame retardants by hindering the chain reaction of the flame gas phase.
St. Louis Group FireGard® SA is sodium antimonate used as a flame retardant synergist in acid-sensitive polymers, such as PET, PBT, PC, and polyamides. FireGard® SA is used in applications that need low tint strength, thereby maximizing the effect of pigments. FireGard® SA also helps produce semitransparent products.
Like antimony trioxide, FireGard® SA must be used in conjunction with a halogenated flame retardant. In PVC applications, it can be used as a stand-alone flame retardant additive. In other nonhalogen-containing resins, it must be used along with bromine or chlorine flame retardants.
Color: White
Form: Powder
CAS number: 15432-85-6
Antimony content: 61% minimum
Trivalent antimony: 0.5% maximum
Lead: 0.05% maximum
Arsenic: 0.03% maximum
Iron: 0.006% maximum
Sodium hydroxide: 0.5% maximum
325 mesh: 0.10% maximum
Particle size: 2 microns
Specific gravity: 4.8
Low reactivity
Low opacity
Excellent physical properties
Low tint strength
Compatibility of antimony fire retardants with acid-sensitive polymers, including ET, PBT, PC, and polyamides
High tent strength of antimony trioxide fire retardants and synergists
Plastics
Textiles and fabrics
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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