单词 | sylvic |
释义 | sylvicsilvicadj. Chemistry. sylvic acid n. a colourless crystalline substance, isomeric with pinic acid, and, like it, forming a constituent of colophony or turpentine-resin. ΘΚΠ the world > matter > chemistry > organic chemistry > acids obtained from plants or trees > [noun] > miscellaneous others rheumic acid1816 arabic acida1836 rubiacic acid1835 aspartic acid1836 sylvic acid1836 tannic acid1836 oenanthic acid1837 gummic acid1838 retinic acid1838 roccellic acid1838 rubinic acid1838 lobelic acid1840 polychromatic acid1840 rhabarbaric acid1840 roccelline1840 humic1844 sumbulolic acid1844 isatic acid1845 opianic acid1845 parthenic acid1845 polychromic acid1847 styphnic acid1848 metapectic acid1849 tanningenic acid1852 jalapic acid1853 jalapinolic acid1855 sinapic acid1857 amalic acid1863 phycic acid1864 filicic acid1865 isamic acid1865 tannocaffeic acidc1865 tricarballylic acid1865 guaiaretic acid1866 pectous acid1866 phytomelin1866 porphyric acid1866 thujetic acid1868 turpetholic acid1868 viridic acid1868 rheotannic acid1869 arabinic acid1870 frangulic1872 sclerotic acid1876 theobromic acid1878 gynocardic acid1897 chaulmoogric acid1904 1836 W. T. Brande Man. Chem. (ed. 4) 978 Silvic Acid..is insoluble in water, fusible at about 212°, soluble in alcohol and ether, and in sulphuric acid. 1838 T. Thomson Chem. Org. Bodies 506 That portion of the resin which remains undissolved when the turpentine freed from its oil is digested in cold alcohol of 0·867, has been called silvic acid by Unverdorben, and resin beta by Berzelius. 1844 G. Fownes Man. Elem. Chem. 500 Pure sylvic acid crystallizes in small, colourless, rhombic prisms. This entry has not yet been fully updated (first published 1919; most recently modified version published online December 2019). < |
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