US PATENT SUBCLASS 558 / 70
.~ Phosphorus esters (i.e., compounds having the phosphorus ester group, wherein trivalent or pentavalent phosphorus and carbon are bonded directly to the same divalent chalcogen, and wherein the carbon may be single bonded to any atom but may be multiple bonded only to carbon)

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558 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {21}
70.~ Phosphorus esters (i.e., compounds having the phosphorus ester group, wherein trivalent or pentavalent phosphorus and carbon are bonded directly to the same divalent chalcogen, and wherein the carbon may be single bonded to any atom but may be multiple bonded only to carbon) {18}
71  DF  .~.~> With preservative or stabilizer
72  DF  .~.~> Boron containing
73  DF  .~.~> The phosphorus is in a ring {4}
87  DF  .~.~> Processes {19}
151  DF  .~.~> Oxygen single bonded to oxygen, or sulfur single bonded to sulfur (e.g., peroxy compounds, etc.)
152  DF  .~.~> Plural phosphori bonded to the same chalcogen (e.g., pyrophosphate esters, etc.)
153  DF  .~.~> Phosphorus and a -C(=X)- group, wherein X is chalcogen, bonded directly to the same chalcogen
154  DF  .~.~> Hydrazine, or substituted hydrazine, group attached directly or indirectly to the phosphorus by nonionic bonding (i.e., HHN-NH- group, wherein substitution may be made for hydrogen only)
155  DF  .~.~> Plural phosphori attached directly or indirectly to each other by nonionic bonding {1}
166  DF  .~.~> Nitrogen attached indirectly to the phosphorus by acyclic nonionic bonding {3}
177  DF  .~.~> Chalcogen attached indirectly to the phosphorus by acyclic nonionic bonding {2}
190  DF  .~.~> Nitrogen attached indirectly to the phosphorus by nonionic bonding {3}
194  DF  .~.~> Chalcogen attached indirectly to the phosphorus by nonionic bonding {4}
199  DF  .~.~> Nitrogen bonded directly to the phosphorus {2}
202  DF  .~.~> Halogen attached directly to the phosphorus by nonionic bonding
203  DF  .~.~> Halogen attached indirectly to the phosphorus by acyclic nonionic bonding {2}
207  DF  .~.~> Divalent chalcogen double bonded directly to the phosphorus {2}
218  DF  .~.~> Three divalent chalcogens single bonded directly to trivalent phosphorus (e.g., trialkyl phosphites, etc.)

DEFINITION

Classification: 558/70

(under subclass 1) Compounds under Class 532, ... which contain a phosphorus ester group, wherein trivalent or pentavalent phosphorus and carbon are bonded directly to the same divalent chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), and wherein the carbon may be single bonded to any element but may be multiple bonded only to carbon.

(1) Note. Among the different phosphorus ester groups classifiable in this and indented subclasses are (see illustration below) wherein the X's may be the same or diverse chalcogens (i.e., oxygen, sulfur, selenium, or tellurium). [figure] [figure] [figure] [figure] [figure] [figure]

SEE OR SEARCH CLASS

588, Hazardous or Toxic Waste Destruction or Containment,

206, 225 for the destruction of organic hazardous or toxic waste containing halogen, chalcogen, nitrogen, phosphorus, or metals.