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safranin n. 鹽基性紅色染料 鹽基性紅色染料 safranin n 1: any of a class of chiefly red organic dyes [synonym: {safranine}, {safranin}, {saffranine}] Safranin \Saf"ra*nin\, n. (Chem.)
(a) An orange-red dyestuff extracted from the saffron. [R.] (b) A red dyestuff extracted from the safflower, and formerly used in dyeing wool, silk, and cotton pink and scarlet; -- called also {Spanish red}, {China lake}, and {carthamin}. (c) An orange-red dyestuff prepared from certain nitro compounds of creosol, and used as a substitute for the safflower dye. [1913 Webster] Polychroite \Pol"y*chro*ite\, n. [Poly- Gr. ? color: cf. F. polychro["i]te.] (Chem.) The coloring matter of saffron; -- formerly so called because of the change of color on treatment with certain acids; -- called also {crocin}, and {safranin}. [1913 Webster]
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