Artificial dye-stuffs; their nature, manufacture, and uses (1917)
Ramsey, Albert R. J, Weston, H. Claude (Hubert Claude) · London, Routledge; New York, Dutton · leaf 145
the presence of one atom of oxygenfor each molecule of the reacting compounds, thehydrogen and oxygen contained in the amino- and 130 AZINE AND HETEROCYCLIC DYES hydroxyl-groups of the pyrocatechol and o-phenylene-diamine, together with the oxygen employed for oxi-dation, unite to form three… … C H Diphenazine A method of producing azines, which is widelj- used,consists in the action of alpha- or ortho-diketones (aketone being a substance containing the radical CO)on aromatic orthodiamints. A simple example illus-trating this method is the production of phenazinefrom gljoxal, a dikctone…
Dyes and dyeing
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