phenosafraninen.
/ˌfiːnə(ʊ)ˈsafrəniːn/, /ˌfɛnə(ʊ)ˈsafrəniːn/, U.S. /ˌfinoʊˈsæfrəˌnin/, /ˌfɛnoʊˈsæfrəˌnin/, /ˌfinoʊˈsæfrənən/, /ˌfɛnoʊˈsæfrənən/ A synthetic red azo dye, used in photography as a desensitizer; 3,7-diamino-5-phenylphenazinium chloride, C18H15N4Cl. Also: a substituted derivative of this compound.
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the world > matter > chemistry > organic chemistry > organic dyes > [noun] > colouring red
alizarin1827
santalin1833
orcein1838
purpurin1839
indin1841
isatin1845
roseine1859
aurin1869
Turkey red oil1879
phenosafranine1883
rhodamine1888
azaleine1889
phloxine1890
pyronin1895
primuline red1900
1883 Jrnl. Chem. Soc. 44 731 Phenosafranine,..obtained by Witt by oxidising a mixture of aniline (2 mols.) and paraphenylenediamine (1 mol.).., forms beautifully crystalline salts.
1893 J. E. Humphrey tr. A. Zimmermann Bot. Microtechnique 168 Mangin..obtained a deep staining of the middle lamella on placing thin sections of adult plant-organs in phenosafranin or methylene blue.
1921 Glasgow Herald 6 Apr. 7 The discovery of phenosafranin as a desensitiser.
1937 Thorpe's Dict. Appl. Chem. (ed. 4) I. 571/2 Nietzki showed that the same phenosafranine may be obtained (a) by condensing phenyl-m-phenylenediamine with phenyl-p-phenylenediamine, or (b) from diphenyl-m-phenylenediamine..and p-phenylenediamine.
1970 Amateur Photographer 11 Mar. 63/3 The phenosafranines and allied desensitising dyes are not suitable for papers as they stain badly.
1994 Denver Post 30 Jan. t1/4 Such colors! All the new electrochemical pastel..tangerine.., demure, Congo ruby, methyl green, viridian, aquamarine, phenosafranine.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
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n.1883