Pimaric acid is a carboxylic acid that is classified as a resin acid. It is a major component of the rosin obtained from pine trees.[1][2]

When heated above 100 °C, pimaric acid converts to abietic acid, which it usually accompanies in mixtures like rosin.

It is soluble in alcohols, acetone, and ethers. The compound is colorless, but almost invariably samples are yellow or brown owing to air oxidation. As a mixture with abietic acid, it is often hydrogenated, esterified, or otherwise modified to produce materials of commerce.

Abietic acid is closely related to and more common than pimaric acid, which is an isomer

See also

References

  1. ^ "Pimaric acid". Merriam-Webster.
  2. ^ Fiebach, Klemens; Grimm, Dieter (2000). "Resins, Natural". Ullmann's Encyclopedia of Industrial Chemistry. doi:10.1002/14356007.a23_073. ISBN 978-3-527-30673-2.
Allikas: https://en.wikipedia.org/wiki/Pimaric_acid
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