HODAMINE PINK. 53 Fig. 24, which is drawn from the writers own experi-ments, shows clearly the gradual increase in the absorptionband of the beautiful pink dyestuff named rhodamine, aphthalein derivative. A dilute solution of \ centimetrethickness presents a very delicate bluish-pink tint, andshows… … Fig. 24.—Showing gradual increase of absorption band of rhodamine pinkon deepening its solution. The colour varies from a delicate bluish-pink (a) to a pure scarlet (h) at 20 centimetres thickness. strongest in the yellow green (see (a)). The same dyesolution, increased to | centimetre thickness,…
Color in the textile industries · Dyes and dyeing
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