fumaric acid

fumaric acid (fyōmărˈĭk) [key] or trans -butenedioic acid, HO2CCH&eq;CHCO2H, unsaturated dicarboxylic acid that melts at 287°C. Maleic acid, or cis -butenedioic acid, is a geometric isomer of fumaric acid; it melts at about 140°C. Of the two isomers fumaric acid is the more stable and can be prepared from maleic acid by heating it. Fumaric acid can be prepared by catalytic oxidation of benzene or by bacterial action on glucose. It is found in small amounts in a variety of plants and is essential to the respiration of animal and vegetable tissue. Fumaric acid is used as a substitute for tartaric acid in beverages and baking powder. It is used as a mordant in dyeing and in the manufacture of synthetic resins and polyhydric alcohols.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on fumaric acid from Fact Monster:

  • maleic acid - maleic acid maleic acid : see fumaric acid.
  • trans-butenedioic acid - trans-butenedioic acid trans-butenedioic acid, IUPAC name for fumaric acid.
  • cis-butenedioic acid - cis-butenedioic acid cis-butenedioic acid , IUPAC name for maleic acid; see fumaric acid.
  • tartaric acid - tartaric acid tartaric acid, HO2CCHOHCHOHCO2H, white crystalline dicarboxylic acid. It occurs as ...
  • Krebs cycle - Krebs cycle Krebs cycle, series of chemical reactions carried out in the living cell; in most ...

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