"' Pimaric acid "'is a carboxylic acid from the resin acid group.
2.
Pimaric acid closely resembles abietic acid into which it passes when distilled in a vacuum; it has been supposed to consist of three isomers.
3.
Examples of resin acids are abietic acid ( sylvic acid ), C 20 H 30 O 2, plicatic acid contained in cedar, and pimaric acid, C 20 H 30 O 2, a constituent of galipot resin.
4.
A mixture of organic acids ( resin acids, predominantly abietic acid, with pimaric acid, isopimaric acid, neoabietic acid, dihydroabietic acid, and dehydroabietic acid ), rosin is a glassy solid, virtually nonreactive and noncorrosive at normal temperature, but liquid, ionic and mildly reactive to metal oxides at molten state.
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