Boron Trichloride Supplier to Beaumont Boron trichloride (BCl3) is a colorless, toxic, corrosive gas delivered as a liquid under its own vapor pressure. Beaumont customers who want a well-established, local producer of boron trichloride should contact Coastal Welding Supply at 800-852-4177.Boron trichloride has a number of classic utilizations, including as a starting material for the production of elemental boron. It has been normally associated with the preparation and refining of aluminium, magnesium, zinc, and copper alloys to get rid of nitrides, carbides, and oxides from molten metal, although the majority of these processes have moved away from North America.It still has some use when mixed with other compounds as a soldering flux for alloys of aluminium, iron, zinc, tungsten, and monel. Most BCl3 in North America was once used in the production of electrical resistors, to help create a carbon film over a ceramic base. Currently, most Ultra High Purity Boron Trichloride (BCl3) is used in plasma etching in semiconductor manufacturing. This gas etches metal oxides by formation of boron chlorates.Cylinder quantities of PurityPlus® High Purity Boron Trichloride are also supplied to many chemical research facilities and universities for use as a reagent in the development of organic chemicals.