Description General description Boron trichloride is a boron halide. It participates in the hydroboration of alkenes. It forms strongly polarized donor-acceptor complexes with trimethyl- and triethylsilyl triflate. Boron trichloride assisted reaction between acid chlorides and alkynyltrifluoroborate salts have been reported to form ynones. Application Boron trichloride may be used in the synthesis of Cl-BODIPYs (BODIPY - Boron-dipyrromethene) and tris(dimethylamino)borane. It may be used in the synthesis of sceptrins and nakamuric acid. For preparing methyl esters of fatty acids and for transesterification of triglycerides. Packaging 2 L in Sure/Seal™ 4×25, 100, 800 mL in Sure/Seal™ The 25 mL Sure/Seal™ bottle is recommended as a single-use bottle. Repeated punctures will likely result in decreased performance of product. Legal Information Sure/Seal is a trademark of Sigma-Aldrich Co. LLC