Sodium pyroantimonate

Sodium pyroantimonate (CAS 11112-10-0), also known as antimonic acid sodium salt, is an inorganic antimony compound used industrially as a flame retardant and rheology modifier. It functions by suppressing combustion in polymer systems and adjusting flow behavior in specialty formulations.

In plastics and rubber compounding, sodium pyroantimonate acts as a flame retardant synergist. It is particularly effective alongside halogenated systems where antimony enhances char formation and gas-phase flame inhibition during the combustion process.

The textile and nonwoven sector uses it to impart fire resistance to fiber treatments and fabric coatings applied during finishing processes. This ensures that materials meet stringent safety standards required for industrial and commercial use.

In paper manufacturing, it contributes to flame-retardant barrier coatings where controlled rheology during application is critical to coating uniformity. This allows for a consistent protective layer across the entire surface of the paper substrate.

Leather processing operations use it as a rheology modifier in aqueous treatment baths. In these applications, consistent viscosity directly affects penetration depth and the final surface finish quality of the treated leather goods.

Sodium pyroantimonate is supplied as a white powder or fine crystalline solid. It is available in technical grade, with purity levels typically specified to meet industrial processing requirements in plastics, rubber, and textile applications.

Packaging is commonly offered in bags or drums suited to bulk industrial procurement. Our logistics team ensures that all chemical shipments are handled according to safety protocols to maintain product integrity during transit to your facility.