abietic acid

abietic acid

[ab-ee-et-ik, ab-]
noun Chemistry.
a yellow, crystalline, water-insoluble acid, C 20 H 30 O 2 , obtained from the resin of a species of pine: used chiefly in driers, varnishes, and soaps.
Also called sylvic acid.


Origin:
1860–65; < Latin abiet- (stem of abiēs) fir + -ic

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abietic acid (ˌæbɪˈɛtɪk)
 
n
a yellowish powder occurring naturally as a constituent of rosin and used in lacquers, varnishes, and soap. Formula: C19H29COOH; melting pt: 173°C
 
[C19: abietic, from Latin abiēt-, from abiēs silver fir (the acid originally being extracted from the resin)]

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Encyclopedia Britannica
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abietic acid

the most abundant of several closely related organic acids that constitute most of rosin, the solid portion of the oleoresin of coniferous trees. Commercial abietic acid is usually a glassy or partly crystalline, yellowish solid that melts at temperatures as low as 85 C (185 F). It belongs to the diterpene group of organic compounds (compounds derived from four isoprene units)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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