alkali blue

noun

Definition of alkali blue

1 : any of various alkali-soluble triphenylmethane dyes that are essentially sodium salts of monosulfonic acids of phenylated pararosaniline and are used chiefly in making pigments

2 : any of the fairly permanent pigments made from an alkali blue dye and used chiefly in printing inks

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Dictionary Entries near alkali blue

alkali cellulose

alkali chlorosis

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The first known use of alkali blue was in 1864

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