| 508 / | HD | SOLID ANTI-FRICTION DEVICES, MATERIALS THEREFOR, LUBRICANT OR SEPARATE COMPOSITIONS FOR MOVING SOLID SURFACES, AND MISCELLANEOUS MINERAL OIL COMPOSITIONS |
| 110 | DF | LUBRICANTS OR SEPARANTS FOR MOVING SOLID SURFACES AND MISCELLANEOUS MINERAL OIL COMPOSITIONS (E.G., WATER CONTAINING, ETC.) {53} |
| 577 | DF | .~ Organic oxygen compound {3} |
| 579 | | .~.~ Ethers {2} |
| 580 | DF | .~.~.~> Ring bonded directly to the ether oxygen {1} |
| 582 | DF | .~.~.~> Halogen attached indirectly to the ether oxygen by nonionic bonding |