Esterification of aliphatic hydroxy acids to n-propyl esters in aqueous solutions for their gas chromatographic analysis

I. Molnár-Perl, M. Morvai

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Aliphatic hydroxy acids were esterified in aqueous solution in the presence of different amounts of sulfuric acid. Esterification of lactic, tartronic, malic and citric acids in water/n-propanol mixtures with mole ratios between 0.03 and 2.15 can be utilized for the determination of these acids by gas chromatography. Water does not interfere at water/n-propanol mole ratios below 0.03. For mole ratios above 0.03 anhydrous sodium sulfate is used for the binding of water. The mole ratio range was 0.24-2.13 for anhydrous sodium sulfate/water, and 0.16-1.28 for sulfuric acid/anhydrous sodium sulfate.

Original languageEnglish
Pages (from-to)760-763
Number of pages4
JournalChromatographia
Volume23
Issue number10
DOIs
Publication statusPublished - Oct 1 1987

Keywords

  • Esterification in aqueous solution
  • Gas chromatography
  • n-Propyl esters of aliphatic hydroxy acids

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Clinical Biochemistry
  • Organic Chemistry

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