Antimony trichloride

Antimony trichloride (CAS 10025-91-9) is an inorganic antimony salt used industrially as a catalyst and flame retardant precursor. It functions as a reactive intermediate in the synthesis of antimony-based compounds.

This chemical acts as a Lewis acid catalyst in organic and polymer chemistry. In plastics and polymer manufacturing, it serves as a precursor to antimony trioxide, which is incorporated into flame retardant systems.

These systems are essential for PET, polyolefins, and engineering resins. Electronics manufacturers use antimony trichloride-derived compounds in the treatment of circuit board substrates and semiconductor components.

These applications require controlled flame retardancy for safety and performance. In metalworking and surface finishing, it is applied in bluing and browning formulations for steel to produce protective layers.

These oxide layers provide durability on various metal surfaces. Lewis acid catalysis applications include Friedel-Crafts type reactions and chlorination processes in specialty chemical production facilities.

The product is supplied as a colorless to pale yellow crystalline solid or in molten form for bulk transfer. Technical grade is the standard commercial specification for most industrial buyers.

Purity levels typically range from 98% to 99.5% depending on the specific batch. Packaging options commonly include drums and intermediate bulk containers suited to moisture-sensitive materials.