单词 | pyrogallin |
释义 | pyrogallinn. Chemistry. rare. = pyrogallol n. ΘΚΠ society > leisure > the arts > visual arts > photography > chemicals > [noun] > reducing agent pyrogallic acid1835 pyrogallin1857 reducer1858 pyrogallol1868 pyro1879 1857 Chem. Gaz. 1 Aug. 286 It might be advisable to replace the term pyrogallic acid, by pyrogalline [Fr. pyrogalline], or simply galline. 1876 J. Harley Royle's Man. Materia Med. (ed. 6) 422 Heated to 410° gallic acid is..converted into pyrogallin and carbonic anhydride. 1991 Jrnl. Chromatogr. 542 125 Other theaflavins can be formed..in the presence of catechol (categallin) or pyrogallol (pyrogallin). This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < n.1857 |
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