Azelaic acid

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A yellowish to white crystalline powder made by the oxidation of Oleic acid. Azelaic acid is formed during the drying of Linseed oil by the oxidative scission of some of the C18 fatty acids. It is found as a constituent in the chromatographic analysis of dried linseed oil. Azelaic acid is also added to alkyds, [[polyamide|polyamides], polyesters, and polyurethanes as a plasticizer.

Synonyms and Related Terms

nonanedioic acid; 1,7-heptanedicarboxylic acid; lepargylic acid; anchoic acid; azeleic acid


  • Incompatible with strong bases, strong reducing or oxidizing agents.
  • Decomposition may produce toxic fumes.
  • Fisher Scientific: MSDS

Physical and Chemical Properties

Soluble in hot water, ethanol and organic solvents.

Composition HOOC(CH2)7COOH
CAS 123-99-9
Melting Point 106.5 C
Density 1.029 g/ml
Molecular Weight mol. wt.=188.22
Boiling Point 365 C (dec)

Resources and Citations

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • John S. Mills, Raymond White, The Organic Chemistry of Museum Objects, Butterworth Heineman, London, 2nd ed., 1994
  • The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 910
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 17