Antimony trichloride

Antimony trichloride (CAS 10025-91-9) is an inorganic antimony salt used industrially as a catalyst and flame retardant precursor.

Where is Antimony trichloride used?

• Reactive intermediate in the synthesis of antimony-based compounds
• Lewis acid catalyst in organic and polymer chemistry, including Friedel-Crafts type reactions and chlorination processes
• Plastics and polymer manufacturing: precursor to antimony trioxide for flame retardant systems in PET, polyolefins, and engineering resins
• Electronics: treatment of circuit board substrates and semiconductor components
• In metalworking and surface finishing it is applied in bluing and browning formulations for steel to produce protective layers.

Commercial specifications

• 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.