soluble blue


often capitalized S&B : any of several water-soluble acid dyes made by sulfonating the Spirit Blues and used in the form of salts chiefly in writing inks, in laundry blues, and as biological stains
: a pigment dispersible in water that is made by treating an iron blue with sodium ferrocyanide or oxalic acid and is used chiefly in permanent writing inks and laundry blues

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Dictionary Entries Near soluble blue

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“Soluble blue.” Dictionary, Merriam-Webster, Accessed 20 Jul. 2024.

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