Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
C07D219/00—Heterocyclic compounds containing acridine or hydrogenated acridine ring systems
C07D219/04—Heterocyclic compounds containing acridine or hydrogenated acridine ring systems with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the ring system
Verfahren zur Darstellung von freier Phosphorsäure und Alkaliphosphaten aus Thomasschlacke und anderen basischen Phosphaten mittelst Oxalsäure und deren Alkalisalze unter Regeneration der letzteren in diesem Verfahren