| 508 / | HD | SOLID ANTI-FRICTION DEVICES, MATERIALS THEREFOR, LUBRICANT OR SEPARATE COMPOSITIONS FOR MOVING SOLID SURFACES, AND MISCELLANEOUS MINERAL OIL COMPOSITIONS | 
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| 110 | DF | LUBRICANTS OR SEPARANTS FOR MOVING SOLID SURFACES AND MISCELLANEOUS MINERAL OIL COMPOSITIONS (E.G., WATER CONTAINING, ETC.) {53} | 
| 421 | DF | .~ Organic phosphorus compound, wherein the phosphorus is single bonded directly to chalcogen by nonionic bonding (e.g., phosphorus acids, esters, etc.) {7} | 
| 429 |  | .~.~ Chalcogen attached indirectly to the phosphorus by nonionic bonding {2} | 
| 430 | DF | .~.~.~> The chalcogen, X, is part of a -C(=X)- group | 
| 431 | DF | .~.~.~> Plural carbons bonded directly to the chalcogen or to a chain of chalcogens {1} |