| 单词 | tar acid |
| 释义 | > as lemmastar acid tar acid n. any of numerous phenolic constituents of coal-tar distillates that react with dilute caustic soda to give water-soluble salts. ΘΚΠ the world > matter > chemistry > organic chemistry > organic acids > [noun] > phenolic acids, named benzoic acid1791 oil of spiraea1842 toluic acid1857 itatartaric acid1872 aspirin1899 phenylarsonic acid1905 tar acid1909 pteroic acid1946 1909 Chem. Abstr. 3 1079 (heading) Hydrocarbons obtained from the tar acids of petroleum. 1946 Sat. Evening Post 18 May 151 (advt.) Coal-Tar Chemicals—Benzol, toluol, naphthalene, tar acids, tar bases, solvents, [etc.]. 1974Tar acid [see tar base n.]. < as lemmas |
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