| 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} | 
| 543 |  | .~ Compound of indeterminate structure, prepared by reacting an organic nitrogen compound of known structure {1} | 
| 544 | DF | .~.~> An aldehyde is reacted with the organic nitrogen compound |