Boron fluoride, high-purity

Takeda, K., Ikushima, S., Okuzaki, J., Watanabe, S., Fujimoto, T, and Nakahara, T. (2001) Inductively coupled plasma mass spectrometric determination of ultra-trace elements in electronic grade water and chemicals using dulcitol. Anal Chim. Acta, 426(1), 105-9. McCurdy, E. and Potter, D. (October 2001) Applications of ICP-MS for trace and ultratrace metal quantitation in organic matrices. Semiconductor Int. Web exclusive www. reed-electronics.com/semiconductor/article/C A179126 text=mccurdy%20%26%20potter. Kozono, S., Yagi, M., and Takashi, R. (1998) Determination of ultratrace amounts of boron in high purity alcohols by ICP-MS with hydrofluoric acid/potassium fluoride treatment. Anal Chim. Acta, 368(3), 275-80. 

Arsenic and Boron. Arsenic and boron form volatile fluorides which are difficult to separate from high purity HF. Special equipment and techniques must be used to remove the arsenic. 

Fig. 3.—Apparatus for the preparation of high-purity boron fluoride.

Boron fluoride, for catalysis, 1 23 compound with hexamethyldi-silazane, 5 58 high-purity, 1 2l Boron fluoride-trimethylamine, 5 26... 

High-purity nitrogen oxide trifluoride has been obtained by fluorolysis of the nickel salt. By first forming this compound, troublesome impurities such as carbon tetrafluoride (from the fluorine) and nitrous oxide (from the nitric oxide) are avoided. The mixture, with nitrosyl fluoride and some nitryl fluoride, is purified chemically by titrating the gas with boron trifluoride, when both of the strongly basic oxyfluorides are removed as fluoroborates ... 

The resins, solvents and curing agents used in modem conductive epoxy adhesives are chosen to minimize residual vapors which can be released after cure. Modem epoxy adhesives generally consist of high purity Bis-A epoxies cured with a phenolic novolac resin. These mixtures do not contain boron or fluorides, and generate less ammonia or other corrosive vapors than epoxies available before 1982. 

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