| 单词 | alkali blue |
| 释义 | > as lemmasalkali blue alkali blue n. any of various blue dyes which are applied or remain fast in alkaline conditions; spec. any of a series of sodium salts of phenylated rosaniline sulphonic acids, used as indicators and as pigments for printing inks. ΚΠ 1873 Chem. News 22 Aug. 100/2 This number [sc. Reimann's Färber Zeitung no. 28] contains..receipts for an alkali blue on woollen yarn or piece goods. 1917 Proc. Royal Soc. A. 93 p. xxix Meldola..was also the discoverer..of the beta-naphthalated rosaniline sulphonic acid, first brought out in 1883 as alkali blue XG. 1933 Jrnl. Pediatrics 3 33 Fluorescein is generally said to be finely divided, whereas alkali blue is one of the coarsely divided dyes. 1967 R. R. Karch & E. J. Buber Offset Processes vii. 269 Alkali blues are available in a wide range of the deep reddish shades. They are useful for ‘toning’ blacks. 2005 Focus on Pigments July 2 Alkali blue is widely used as a blue pigment for printing inks and as a toner component in black inks. < as lemmas |
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