margaricadj.

Brit.

/mɑːˈɡarɪk/, U.S.

/mɑrˈɡɛrɪk/

Origin: A borrowing from French. Etymon: French margarique.

Etymology: < French margarique (in acide margarique : M. E. Chevreul 1816, in Ann. de chim. et de physique 2 346) < margar- (in margarine margarin n.) + -ique -ic suffix.

Chemistry.

1. margaric acid n.

a. A substance with the supposed formula C₁₇H₃₄O₂, formerly believed to be one of the three fatty acids whose glyceryl derivatives (olein, margarin, stearin) form the chief constituents of animal fat. Now historical.It was shown by Heintz in 1852 ( Jrnl. f. Prakt. Chem. 66 1) that the margaric acid of Chevreul was really a mixture of palmitic acid, C₁₆H₃₂O₂, and stearic acid, C₁₈H₃₆O₂. In this use the name is now obsolete, though its former prevalence is commemorated in the names margarine and oleo-margarine.

ΚΠ

1819 J. G. Children Ess. Chem. Anal. 314 Margaric acid was obtained from hog's lard by Chevreul in 1813.

1836 W. T. Brande Man. Chem. (ed. 4) iii. vii. §12. 962 Margaric Acid, so named from its pearly lustre,..bears a striking resemblance to stearic acid. It is obtained by decomposing the margarate of potassa.

c1865 J. Wylde Circle of Sci. I. 95/2 Margaric,..and other..Fatty Acids, are obtained from the oils.

b. An artificially synthesized crystalline fatty acid, C₁₆H₃₃COOH (heptadecanoic acid).

ΚΠ

1865–8 H. Watts Dict. Chem. III. 852 Margaric acid forms white crystals, melting at 59·9°, and solidifying in crystalline scales on cooling.

1891 T. E. Thorpe Dict. Appl. Chem. II. 101/2 Margaric acid C₁₆H₃₃COOH may be formed by boiling margonitrile with alcoholic potash.

1892 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) III. 194 .

1899 E. F. Smith tr. V. von Richter Org. Chem. (ed. 3) I. 250 Margaric Acid, C₁₇H₃₄O₂, does not apparently exist naturally in the fats. It is made in an artificial way by boiling cetyl cyanide with caustic potash.

1944 H. G. Kirschenbauer Fats & Oils vi. 64 It was believed that the glycerides of oleic acid and margaric acid were the chief constituents.

1996 Jrnl. Chromatogr. B. 681 356/2 Stock solutions of 2 mg/ml of margaric acid..were prepared in methanol.

†2. margaric ether n. an ether derived from margaric acid (sense 1a). Obsolete.

ΘΚΠ

the world > matter > chemistry > organic chemistry > ether > [noun] > named > others

tartaric ether1789

margaric ether1848

phenetole1851

tellurethyl1852

tributyrin1855

oxamic ether1857

phenomethole1857

meconic ether1865

saccharic ether1868

iodhydrin1872

saccharide1881

ethoxyethane1894

sorbitan1938

styrene oxide1939

nonoxynol1967

1848 G. Fownes Man. Elem. Chem. (ed. 2) 395 Margaric ether is prepared by a similar mode of proceeding.

This entry has been updated (OED Third Edition, December 2000; most recently modified version published online March 2022).

单词	margaric
释义	margaricadj. Brit. /mɑːˈɡarɪk/, U.S. /mɑrˈɡɛrɪk/ Origin: A borrowing from French. Etymon: French margarique. Etymology: < French margarique (in acide margarique : M. E. Chevreul 1816, in Ann. de chim. et de physique 2 346) < margar- (in margarine margarin n.) + -ique -ic suffix. Chemistry. 1. margaric acid n. a. A substance with the supposed formula C₁₇H₃₄O₂, formerly believed to be one of the three fatty acids whose glyceryl derivatives (olein, margarin, stearin) form the chief constituents of animal fat. Now historical.It was shown by Heintz in 1852 ( Jrnl. f. Prakt. Chem. 66 1) that the margaric acid of Chevreul was really a mixture of palmitic acid, C₁₆H₃₂O₂, and stearic acid, C₁₈H₃₆O₂. In this use the name is now obsolete, though its former prevalence is commemorated in the names margarine and oleo-margarine. ΚΠ 1819 J. G. Children Ess. Chem. Anal. 314 Margaric acid was obtained from hog's lard by Chevreul in 1813. 1836 W. T. Brande Man. Chem. (ed. 4) iii. vii. §12. 962 Margaric Acid, so named from its pearly lustre,..bears a striking resemblance to stearic acid. It is obtained by decomposing the margarate of potassa. c1865 J. Wylde Circle of Sci. I. 95/2 Margaric,..and other..Fatty Acids, are obtained from the oils. b. An artificially synthesized crystalline fatty acid, C₁₆H₃₃COOH (heptadecanoic acid). ΚΠ 1865–8 H. Watts Dict. Chem. III. 852 Margaric acid forms white crystals, melting at 59·9°, and solidifying in crystalline scales on cooling. 1891 T. E. Thorpe Dict. Appl. Chem. II. 101/2 Margaric acid C₁₆H₃₃COOH may be formed by boiling margonitrile with alcoholic potash. 1892 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) III. 194 . 1899 E. F. Smith tr. V. von Richter Org. Chem. (ed. 3) I. 250 Margaric Acid, C₁₇H₃₄O₂, does not apparently exist naturally in the fats. It is made in an artificial way by boiling cetyl cyanide with caustic potash. 1944 H. G. Kirschenbauer Fats & Oils vi. 64 It was believed that the glycerides of oleic acid and margaric acid were the chief constituents. 1996 Jrnl. Chromatogr. B. 681 356/2 Stock solutions of 2 mg/ml of margaric acid..were prepared in methanol. †2. margaric ether n. an ether derived from margaric acid (sense 1a). Obsolete. ΘΚΠ the world > matter > chemistry > organic chemistry > ether > [noun] > named > others tartaric ether1789 margaric ether1848 phenetole1851 tellurethyl1852 tributyrin1855 oxamic ether1857 phenomethole1857 meconic ether1865 saccharic ether1868 iodhydrin1872 saccharide1881 ethoxyethane1894 sorbitan1938 styrene oxide1939 nonoxynol1967 1848 G. Fownes Man. Elem. Chem. (ed. 2) 395 Margaric ether is prepared by a similar mode of proceeding. This entry has been updated (OED Third Edition, December 2000; most recently modified version published online March 2022). < adj.1819
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