Boron Trifluoride is a highly toxic, colorless, nonflammable compressed gas with a pugnent odor. Fumes strongly in moist air. Boron has properties which are borderline between metals and non-metals. It is a semiconductor rather than a metallic conductor. Chemically it is more related to silicon than to aluminum, gallium, indium, and thallium. Fluorine is the most electronegative and reactive of all elements. It is a pale yellow, corrosive gas, which reacts with practically all organic and inorganic substances. Boron Trifluoride is used extensively in the semiconductor field.
 
 

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Updated 6/6/99.