Patent classifications
C
CHEMISTRY; METALLURGY
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C01
INORGANIC CHEMISTRY
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C01B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF;; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
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C01B7/01
Chlorine; Hydrogen chloride
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C01B7/07
Purification; ; Separation
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C01B7/0737
hydrogen chloride being extracted
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