FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2085484966> ?p ?o ?g. }

• W2085484966 endingPage "274" @default.
• W2085484966 startingPage "265" @default.
• W2085484966 abstract "Abstract The dinitrophenylhydrazine—phosphoric acid—Celite column first proposed by S chwartz for the conversion of carbonyl compounds in oxidising fats to their dinitrophenylhydrazones (DNPs) has been studied and a number of factors which can influence the stoichiometry of its performance are critically evaluated. It is concluded that the column should be considered to be both an equilibration and a reaction column and that the high yields of monocarbonyl hydrazones obtained in practice arise because of the mass action effect of the high concentration of dinitrophenylhydrazine and low concentration of free water. Since equilibrium in a reversible reaction can be achieved from either direction, it is shown that, to ascertain the degree of conversion of carbonyl compounds in a S chwartz column, the simplest method is to apply a known amount of the dinitrophenylhydrazone itself and to determine the yield of hydrazone eluted from the column under the selected experimental conditions. By considering the DNP to be a form of stabilised aldehyde, the problems inherent in accurately applying to a column known amount of a labile compound can be circumvented. Whilst the importance of careful pretreatment of solvents to render them carbonyl-free has previously been stressed, it is now shown that it is of equal importance to employ stable solvents that will remain carbonyl-free in use. Cyclohexane and benzene are relatively stable solvents and methods for their purification are discussed. Alumina has been found to be an unreliable adsorbent for the isolation of DNPs, giving recoveries both higher and lower than the theoretical value. Unreacted dinitrophenylhydrazine, a small amount of which is eluted from the S chwartz column together with the DNPs, and which is strongly adsorbed to alumina, can act with alumina as a reaction column and generate extra DNPs from traces of spurious carbonyls present in the solvents used for elution. The ion-exchange method of S zonyi has been found to be a more reliable technique for purifying DNPs from unreacted dinitrophenylhydrazine and from fat." @default.
• W2085484966 created "2016-06-24" @default.
• W2085484966 creator A5015493109 @default.
• W2085484966 creator A5066062870 @default.
• W2085484966 date "1971-01-01" @default.
• W2085484966 modified "2023-10-18" @default.
• W2085484966 title "A critical evaluation of some factors influencing the quantitative isolation and characterisation of carbonyl compounds from oxidising fats" @default.
• W2085484966 cites W1981913819 @default.
• W2085484966 cites W1991292776 @default.
• W2085484966 cites W1995523578 @default.
• W2085484966 cites W1997450705 @default.
• W2085484966 cites W2005525161 @default.
• W2085484966 cites W2013051903 @default.
• W2085484966 cites W2018219527 @default.
• W2085484966 cites W2025850139 @default.
• W2085484966 cites W2037464185 @default.
• W2085484966 cites W2048652308 @default.
• W2085484966 cites W2078659650 @default.
• W2085484966 cites W2079980248 @default.
• W2085484966 cites W2083918712 @default.
• W2085484966 cites W2084840658 @default.
• W2085484966 cites W2090857585 @default.
• W2085484966 cites W2147830163 @default.
• W2085484966 doi "https://doi.org/10.1016/0021-9673(71)80039-0" @default.
• W2085484966 hasPublicationYear "1971" @default.
• W2085484966 type Work @default.
• W2085484966 sameAs 2085484966 @default.
• W2085484966 citedByCount "6" @default.
• W2085484966 crossrefType "journal-article" @default.
• W2085484966 hasAuthorship W2085484966A5015493109 @default.
• W2085484966 hasAuthorship W2085484966A5066062870 @default.
• W2085484966 hasConcept C178790620 @default.
• W2085484966 hasConcept C185592680 @default.
• W2085484966 hasConcept C2775941552 @default.
• W2085484966 hasConcept C43617362 @default.
• W2085484966 hasConcept C86803240 @default.
• W2085484966 hasConcept C89423630 @default.
• W2085484966 hasConceptScore W2085484966C178790620 @default.
• W2085484966 hasConceptScore W2085484966C185592680 @default.
• W2085484966 hasConceptScore W2085484966C2775941552 @default.
• W2085484966 hasConceptScore W2085484966C43617362 @default.
• W2085484966 hasConceptScore W2085484966C86803240 @default.
• W2085484966 hasConceptScore W2085484966C89423630 @default.
• W2085484966 hasLocation W20854849661 @default.
• W2085484966 hasOpenAccess W2085484966 @default.
• W2085484966 hasPrimaryLocation W20854849661 @default.
• W2085484966 hasRelatedWork W2050108200 @default.
• W2085484966 hasRelatedWork W2088669026 @default.
• W2085484966 hasRelatedWork W2113085427 @default.
• W2085484966 hasRelatedWork W2168611614 @default.
• W2085484966 hasRelatedWork W2317289584 @default.
• W2085484966 hasRelatedWork W2320547070 @default.
• W2085484966 hasRelatedWork W2330424792 @default.
• W2085484966 hasRelatedWork W2346084788 @default.
• W2085484966 hasRelatedWork W2604890884 @default.
• W2085484966 hasRelatedWork W2952439925 @default.
• W2085484966 hasVolume "57" @default.
• W2085484966 isParatext "false" @default.
• W2085484966 isRetracted "false" @default.
• W2085484966 magId "2085484966" @default.
• W2085484966 workType "article" @default.