pinicadj.
/ˈpʌɪnɪk/, U.S. /ˈpaɪnɪk/ Chemistry.
pinic acid n. a dicarboxylic acid, C9H14O4, obtained from pine resin, whose molecule contains a four-membered ring.
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the world > matter > chemistry > organic chemistry > acids obtained from plants or trees > [noun] > from pine resin
pinic acid1831
pimaric acid1852
1831 T. Thomson Chem. Inorg. Bodies II. 145 In the year 1826 M. Baup inserted a notice in a periodical work that he had discovered pinic acid in the resin called colophon.
1866 H. Watts Dict. Chem. IV. 650 Pinic acid is an amorphous resin, exactly like colophony.
1955 Sci. News Let. 24 Sept. 199/3 The new lubricants are made from a major constituent of turpentine. The chemists worked out a way to synthesize pinic acid from alpha pinene in turpentine.
2002 Nature 4 Apr. 497/3 Our technique does not directly demonstrate that the condensing vapour responsible for producing the new particles is cis-pinonic or pinic acid.
This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).
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