Fay, Irving W. (Irving Wetherbee), 1861-1936 · New York : D. Van Nostrand company · leaf 332
THE EURHODINES AND SAFRANINES 321 their constitutional formulas allows us to see how the color of a dye is influenced by the entrance of additional phenyl groups into the dye molecule. Naphthyl red is a naphthosafranine. … Naphthyl red If one of the hydrogens of the amino group in this molecule is exchanged for a phenyl group, then the red color turns to violet. Now when the hydrogen of the imino group is replaced by a phenyl group, the color is converted from violet to blue. NH06H5 Naphthyl blue The naphthyl red…
Coal-tar colors
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