Method for removal of phosgene from boron trichloride

Details Method for removal of phosgene from boron trichloride Method for removal of phosgene from boron trichloride

1981-09-03

1983-09-20

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

B01J 1912

Patent

active

044054238

ABSTRACT:
Selective ultraviolet photolysis using an unfiltered mercury arc lamp has been used to substantially reduce the phosgene impurity in a mixture of boron trichloride and phosgene. Infrared spectrophotometric analysis of the sample before and after irradiation shows that is is possible to highly purify commercially available boron trichloride with this method.

REFERENCES:
patent: 4063896 (1977-12-01), Merritt et al.
patent: 4146449 (1979-03-01), Clark et al.
Hartford, Electro-Optical Systems Design, (Jan. 1981), pp. 40-42.
Hyer et al., J. App. Phys., (Nov. 1981).
Kuhn et al., Teitschrift fur Physikalische Chemie, Part B, vol. 21, 1933, p. 136.
Maier et al., J. Chem. Phys. 69, (1978), 1961-1965.
Freund et al., Anal. Chem. 50, (1978), 1260-1262.
Freund et al., J. Amer. Chem. Soc., (1979), 101, 4522-4524.

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