| 423 / | HD | CHEMISTRY OF INORGANIC COMPOUNDS |
| 414 | DF | CARBON OR COMPOUND THEREOF {3} |
| 415.1 | DF | .~ Oxygen containing {5} |
| 419.1 | DF | .~.~ Carbonate or bicarbonate {5} |
| 433 | | .~.~.~ Lead containing {2} |
| 434 | DF | .~.~.~.~> By reacting compound containing sulfur or a halogen |
| 435 | DF | .~.~.~.~> By reacting lead acetate or acetic acid {1} |