| 单词 | neutral blue |
| 释义 | > as lemmasneutral blue neutral blue n. a brown crystalline synthetic azine dye, C24H19N3·HCl, which dyes fabric a dull blue but has poor fastness. ΘΚΠ the world > matter > chemistry > organic chemistry > organic dyes > [adjective] > colouring blue neutral blue1889 the world > matter > colour > named colours > blue or blueness > blue colouring matter > [noun] > dyes and dyestuffs > other dyes stone-blue1675 starch blue1742 Saxon blue1753 fig-blue1786 chemic1792 Turkey blue1815 Paris blue1835 Saxony blue1857 soluble blue1879 methylene blue1882 indoin1884 phenylene blue1884 indamine1888 Nile blue1888 gallamine blue1889 neutral blue1889 chrome-blue1892 toluidine blue1898 indanthrene1901 Saxe blue1905 trypan blue1911 mandarin blue1912 1889 Cent. Dict. at Blue Neutral blue, a coal-tar color used in dyeing, the hydrochlorid of the color-base safranine. 1952 K. Venkataraman Chem. Synthetic Dyes II. xxv. 768 A further distinction has been made between Rosindulines..and isoRosindulines, such as Neutral Blue,..in which the auxochrome is in the benzene part of the naphthophenazine nucleus. < as lemmas |
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