| 423 / | HD | CHEMISTRY OF INORGANIC COMPOUNDS |
| 579 | DF | OXYGEN OR COMPOUND THEREOF {4} |
| 592 | DF | .~ Metal containing {12} |
| 608 | DF | .~.~ Group IVB metal (Ti, Zr, or Hf) {2} |
| 610 | DF | .~.~.~ Titanium dioxide {2} |
| 611 | DF | .~.~.~.~ Utilizing titanium halide as reactant {1} |
| 612 | DF | .~.~.~.~.~ Titanium tetrahalide {1} |
| 613 | | .~.~.~.~.~.~ Reacting with oxiding gas {1} |
| 614 | DF | .~.~.~.~.~.~.~> In fluidized bed |