Chemistry of inorganic compounds – Halogen or compound thereof – Hydrogen halide
Patent
1989-01-27
1990-05-22
Russel, Jeffrey E.
Chemistry of inorganic compounds
Halogen or compound thereof
Hydrogen halide
4232451, 423DIG10, 2041573, C01B 707, B01D 300
Patent
active
049276212
ABSTRACT:
A method to purify impure gaseous hydrogen chloride containing an unsaturated chlorinated hydrocarbon contaminant in an amount less than that necessary to inhibit purification, comprising exposing the impure hydrogen chloride to an ultraviolet light source in the presence of gaseous chloride for a sufficient time for the gaseous chloride to react with organic impurities in the hydrogen chloride to form heavier organic compounds and thereafter separating the heavier compounds from the hydrogen chloride.
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patent: 4045316 (1977-08-01), Legan
patent: 4144152 (1979-03-01), Kitchens
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Chemical Abstracts, vol. 70, 1969, 57102j.
Derwent 86-246278/38 (DE 3508371-A).
Derwent 84-050765/09 (EP 101127-A).
Derwent 82-36707E/18 (SU 842016-B).
Derwent 76-15140X/09 (DE 2438153-A).
Derwent 75-60894W/37 (GB 1405714-A).
Hill, Jr. Thomas F.
Morris Thomas E.
Repman Joseph F.
Bolam Brian M.
Russel Jeffrey E.
Selby Robert W.
The Dow Chemical Company
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