Definitionn. either of two phenols derived from naphthalene
Last update: July 7, 2015
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Hinsberg, Ann., 1887, 2 37, p. 340); by the oxidation of an ortho-diamine in the presence of a-naphthol (0. [Please select]
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Bead Holliday & Sons; the Naphthol and Naphthylamine Blacks of Leopold Cassella & Co. [Please select]
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Indigo extract, Cochineal, Acid Magenta, Picric acid, Naphthol Yellow, and Tartrazine dye the wool only at the boil. [Please select]
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They may even be diazotised and developed with beta-naphthol and phenylene diamine. [Please select]
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, contain amido groups, by reason of having been made from such bodies as phenylene diamine, amido naphthol, toluidine, etc. [Please select]
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Those most in use are beta-naphthol for red from Primuline, and for bluish blacks from Diamine blacks, Diazo blacks, Zambesi blacks, etc. [Please select]
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Alpha-naphthol for dark reds from Primuline, greys from Diamine blues, Neutral grey, etc. [Please select]
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