purpurogallinn.

Brit.

/ˌpəːpjᵿrə(ʊ)ˈɡalɪn/, U.S.

/ˈˌpərp(j)əroʊˈɡæl(ə)n/

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

Etymology: < French purpurogalline (A. Girard 1869, in Comptes rendus hebd. de l'Acad. des Sci. 69 866) < purpur- (in purpurine purpurin n.) + -ogall- (in pyrogallique pyrogallic adj.; compare quot. 1872) + -ine -in suffix¹. The dye was so named after the unrelated purpurin (see purpurin n. 2) by analogy with the preparation of that substance by oxidation of alizarin.

Chemistry.

An orange-red crystalline dye, originally prepared by mild oxidation of pyrogallol and later found to occur in some oak galls.Purpurogallin is a tetrahydric phenol with fused tropolone and trihydroxybenzene rings; C₁₁H₈O₅.

ΘΚΠ

the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > benzene derivatives > phenols > others

phenetidine1851

nitrophenol1852

carvacrol1854

guaiacol1864

hydroquinone1865

iodophenol1868

pentachlorophenol1869

trichlorophenol1871

purpurogallin1872

xylenol1872

kosin1875

phloroglucinol1879

cerulignol1883

cannabinol1896

gossypol1899

thiophenol1899

phenol resin1911

oxine1927

nordihydroguaiaretic acid1944

1872 Jrnl. Chem. Soc. 25 703 Purpurogallin, the substance obtained by Girard..from pyrogallic acid by the action of silver nitrate,..is the principal product of the oxidation effected by lead peroxide, hydrogen peroxide, [etc.].

1919 Jrnl. Chem. Soc. 115 1329 The investigation of the red colouring matter derived from the ‘red pea gall’ has..to some extent proved disappointing. It was found that dryophantin..was in no way allied either to the flavones or to the anthocyanins, but..consisted of purpurogallin and two molecules of dextrose.

1968 Kirk-Othmer Encycl. Chem. Technol. (ed. 2) XVI. 191 Purpurogallin..a red-brown to black mordant dye, results from electrolytic and other mild oxidations of pyrogallol.

1994 New Phytologist 128 166/2 The concentration of purpurogallin formed was determined spectrophotometrically.

This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).

单词	purpurogallin
释义	purpurogallinn. Brit. /ˌpəːpjᵿrə(ʊ)ˈɡalɪn/, U.S. /ˈˌpərp(j)əroʊˈɡæl(ə)n/ Origin: A borrowing from French. Etymon: French purpurogalline. Etymology: < French purpurogalline (A. Girard 1869, in Comptes rendus hebd. de l'Acad. des Sci. 69 866) < purpur- (in purpurine purpurin n.) + -ogall- (in pyrogallique pyrogallic adj.; compare quot. 1872) + -ine -in suffix¹. The dye was so named after the unrelated purpurin (see purpurin n. 2) by analogy with the preparation of that substance by oxidation of alizarin. Chemistry. An orange-red crystalline dye, originally prepared by mild oxidation of pyrogallol and later found to occur in some oak galls.Purpurogallin is a tetrahydric phenol with fused tropolone and trihydroxybenzene rings; C₁₁H₈O₅. ΘΚΠ the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > benzene derivatives > phenols > others phenetidine1851 nitrophenol1852 carvacrol1854 guaiacol1864 hydroquinone1865 iodophenol1868 pentachlorophenol1869 trichlorophenol1871 purpurogallin1872 xylenol1872 kosin1875 phloroglucinol1879 cerulignol1883 cannabinol1896 gossypol1899 thiophenol1899 phenol resin1911 oxine1927 nordihydroguaiaretic acid1944 1872 Jrnl. Chem. Soc. 25 703 Purpurogallin, the substance obtained by Girard..from pyrogallic acid by the action of silver nitrate,..is the principal product of the oxidation effected by lead peroxide, hydrogen peroxide, [etc.]. 1919 Jrnl. Chem. Soc. 115 1329 The investigation of the red colouring matter derived from the ‘red pea gall’ has..to some extent proved disappointing. It was found that dryophantin..was in no way allied either to the flavones or to the anthocyanins, but..consisted of purpurogallin and two molecules of dextrose. 1968 Kirk-Othmer Encycl. Chem. Technol. (ed. 2) XVI. 191 Purpurogallin..a red-brown to black mordant dye, results from electrolytic and other mild oxidations of pyrogallol. 1994 New Phytologist 128 166/2 The concentration of purpurogallin formed was determined spectrophotometrically. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < n.1872
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