423 / | HD | CHEMISTRY OF INORGANIC COMPOUNDS |
511 | DF | SULFUR OR COMPOUND THEREOF {4} |
567.1 | DF | .~ Elemental sulfur {5} |
571 | DF | .~.~ Reacting a sulfide {3} |
573.1 | DF | .~.~.~ Hydrogen sulfide {4} |
576.4 | DF | .~.~.~.~ By reacting gaseous feed stream with liquid aqueous mixture {2} |
576.7 | .~.~.~.~.~ Organic compound-containing |