phloroglucinoln.
/ˌflɒrə(ʊ)ˈɡluːsᵻnɒl/, /ˌflɔːrə(ʊ)ˈɡluːsᵻnɒl/, U.S. /ˌflɔroʊˈɡlusəˌnɑl/ Chemistry.
A colourless or yellowish, sweet-tasting, crystalline phenolic compound which occurs widely in plants and is used as a laboratory reagent (esp. for detecting lignin and other carbohydrates), an intermediate in dye manufacture, a preservative for cut plants, etc.; 1,3,5-trihydroxybenzene, C6H3(OH)3. Cf. earlier phloroglucin n.
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the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > benzene derivatives > phenols > others
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1879 Jrnl. Chem. Soc. 36 633 By this synthesis, the aromatic nature of phloroglucinol is definitely established.
1906 H. J. H. Fenton Notes Qualitative Anal. (new ed.) 109 With phloroglucinol in alkaline solution it [sc. formaldehyde] gives a red colour.
1949 E. Chain in H. W. Florey et al. Antibiotics II. xix. 758 They also tested a large number of chemicals for their ability to stimulate the production of penicillin... Among the ineffective substances were sodium azide,..phloroglucinol, naphthol, [etc.].
1992 C. A. Smith & E. J. Wood Biosynthesis vi. 118 In histochemistry, lignin is detected by the used of phloroglucinol or safranin.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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n.1879