| 562 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {41} |
| 30 |  | .~ Sulfonic acids or salts thereof (i.e., compounds containing the sulfonate group, -S(=O)(=O)-O- wherein the single bonded oxygen is bonded directly to hydrogen, or to a group IA or IIA light metal or to substituted or unsubstituted ammonium) {15} |
| 31 | DF | .~.~> Hydrophenanthrene ring system containing |
| 32 | DF | .~.~> Processes of sulfonating lignites, leonardites, coal, humic acids, bark or pitch, and the reaction products thereof |
| 33 | DF | .~.~> Petroleum sulfonic acids {1} |
| 35 | DF | .~.~> Boron or phosphorus attached indirectly to the sulfonate group by nonionic bonding (e.g., phosphonium salts, etc.) |
| 36 | DF | .~.~> Chalcogen or -C(=X)-, wherein X is chalcogen, attached directly to the sulfonate sulfur by nonionic bonding |
| 37 | DF | .~.~> Nitrogen attached directly to the sulfonate sulfur by nonionic bonding (e.g., sulfamic acids, etc.) {3} |
| 41 | DF | .~.~> Benzene ring attached indirectly to the sulfonate group by acyclic nonionic bonding {1} |
| 45 | DF | .~.~> Benzene ring bonded directly to the sulfonate sulfur (e.g., purification and neutralization of benzene sulfonic acids, etc.) {11} |
| 100 | DF | .~.~> Polycyclo alicyclic ring system attached directly or indirectly to the sulfonate group by nonionic bonding |
| 101 | DF | .~.~> Plural sulfonate groups attached indirectly to each other by acyclic nonionic bonding {2} |
| 104 | DF | .~.~> Nitrogen attached indirectly to the sulfonate group by acyclic nonionic bonding {2} |
| 108 | DF | .~.~> Chalcogen attached indirectly to the sulfonate group by acyclic nonionic bonding {4} |
| 113 | DF | .~.~> Halogen attached indirectly to the sulfonate group by acyclic nonionic bonding |
| 114 | DF | .~.~> Addition salts having organic nitrogen containing cation |
| 115 | DF | .~.~> Processes (e.g., neutralization, stabilization, etc.) {6} |