Sodium antimonate

Sodium antimonate (CAS 15432-85-6) is an inorganic antimony salt used primarily as a flame retardant and synergist in polymer and coating systems.

Where is Sodium antimonate used?

• Plastics and polymer compounding: halogen synergist
• PET, nylon and engineering resins: boosts flame-retardant efficiency of brominated or chlorinated systems
• Electronics: flame-retardant coatings and laminates
• Textile and paper: back-coating formulations for upholstery and curtains
• Industrial fabrics and automotive components
• Aerospace producers incorporate it into intumescent or halogenated flame-retardant compounds for interior parts.

Good to know: Unlike antimony trioxide, it offers lower volatility and improved compatibility. Particle size distribution is a key procurement parameter, as finer grades improve dispersion in polymer matrices and coatings.

Commercial specifications

• 25 kg bags; bulk quantities available depending on supplier capability