Borontrichloride

Boron trichloride

Product Information

General information

Filling pressure at 15^oC, bar: 1.1

Material recommendations: . Acid-resistant steel, monel, PTFE, PVC, hastelloy.

Characteristics

Liquefied gas, decomposes in water to hydrogen chloride and boric acid. Forms white fumes in humid air. Pungent odour. Highly corrosive.

Health risks

Highly toxic. Attacks the eyes and mucous membranes. Can cause lung damage.

Transport

ADR Class 2, 3(at)

Physical data

Source

Boron trichloride is produced by reacting together one of the following sets of ingredients. In each case the reaction requires elevated temperatures.

Boron trichloride is used as a chemical reagent in the pharmaceutical industry.

Boron trichloride is used as a source of boron for ip-type doping of silicon by thermal diffusion or ion implantation. It is also used for dry plasma etching of aluminum and its alloys.

Boron trichloride is used in refining metals such as aluminum, magnesium, zinc and copper alloys. By bubbling the gas through these molten metals nitrides, carbides and oxides are removed. The same technique is used to clean up castings of these metals. In this case occluded gases such as nitrogen, hydrogen and carbon monoxide are also removed from the casting.

Boron trichloride may be used in the production of optical fibers.

Boron trichloride is the starting material for the production of boron nitride, used as a refractory coating on such articles as crucibles etc.

Boron trichloride is used as a carrier gas, as a catalyst in organic reactions, for manu facturing of electrical resistors.