| 510 / | HD | CLEANING COMPOSITIONS FOR SOLID SURFACES, AUXILIARY COMPOSITIONS THEREFOR, OR PROCESSES OF PREPARING THE COMPOSITIONS |
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| 108 | DF | CLEANING COMPOSITIONS OR PROCESSES OF PREPARING (E.G., SODIUM BISULFATE COMPONENT, ETC.) {21} |
| 109 | DF | .~ For cleaning a specific substrate or removing a specific contaminant (e.g., for smoker's pipe, etc.) {50} |
| 245 | DF | .~.~ For bare metal surface (e.g., degreasing composition, etc.) {9} |
| 247 | DF | .~.~.~ For descaling the inner surface of equipment which is in continuous contact with water (e.g., boiler scale removal; for water storage tank, conduit, etc.) {3} |
| 248 |  | .~.~.~.~ Free element component (e.g., metal, carbon, sulfur, etc.) |