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The Ionization of Citric Acid Studied by the Nuclear Magnetic Resonance Technique

Loewenstein, A. and Roberts, John D. (1960) The Ionization of Citric Acid Studied by the Nuclear Magnetic Resonance Technique. Journal of the American Chemical Society, 82 (11). pp. 2705-2710. ISSN 0002-7863. http://resolver.caltech.edu/CaltechAUTHORS:20151020-124116029

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Abstract

The chemical shift of the methylene hydrogens in citric acid was measured as a function of the PH and the concentration of the solution. From these measurements it was possible to evaluate the chemical shifts associated with each ionization step in citric acid. Measurements were also made of methylene resonance line positions for ionized and non-ionized methyl ester of citric acid. Analysis of the results indicates that the first and second ionizations of citric acid take place predominantly at the terminal carboxyl groups.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/ja01496a013DOIArticle
http://pubs.acs.org/doi/abs/10.1021/ja01496a013PublisherArticle
Additional Information:© 1960 American Chemical Society. Received September 14, 1959. Supported by the Office of Naval Research.
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Funding AgencyGrant Number
Office of Naval Research (ONR)UNSPECIFIED
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Caltech Gates and Crellin Laboratories of Chemistry2493
Record Number:CaltechAUTHORS:20151020-124116029
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20151020-124116029
Official Citation:The Ionization of Citric Acid Studied by the Nuclear Magnetic Resonance Technique A. Loewenstein and John D. Roberts Journal of the American Chemical Society 1960 82 (11), 2705-2710 DOI: 10.1021/ja01496a013
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61334
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:20 Oct 2015 21:14
Last Modified:20 Oct 2015 21:14

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