Accession Number : AD0456878


Title :   REACTIONS OF OXALACETIC ACID AND THE FERRIC AND AMMONIUM COMPLEXES OF OXALACETIC ACID,


Corporate Author : ARMY MEDICAL RESEARCH LAB FORT KNOX KY


Personal Author(s) : Goucher, Charles R ; Strickland, E Hardin


Report Date : 07 Dec 1964


Pagination or Media Count : 20


Abstract : Reactions of oxalacetic acid were investigated in acidic, neutral, and alkaline solutions. In addition to its well-known decarboxylation reaction, oxalacetic acid can be transformed by heating in 0.1 M HClO4 into a compound with an absorption peak at 230 millimicrons. This compound reacts with ferric iron, as oxalacetic acid also does. Ferric oxalacetate chelates can be formed in both acidic and alkaline solutions. At pH 1-4 ferric oxalacetic acid rapidly decomposes. In alkaline solutions it appears relatively stable. In contrast, the ammonium oxalacetate complex, which absorbs at 285 millimicrons, decomposes rapidly in neutral and mildly alkaline solutions. Above pH 9.5 the ammonia oxalacetate complex is relatively stable. (Author)


Descriptors :   *IRON COMPOUNDS , METABOLISM , OXALACETIC ACID , COMPLEX COMPOUNDS , AMMONIUM COMPOUNDS , STABILITY , PH FACTOR , PERCHLORIC ACID , VISIBLE SPECTRA , ULTRAVIOLET SPECTRA , CHEMICAL EQUILIBRIUM


Distribution Statement : APPROVED FOR PUBLIC RELEASE