variants or nigrosine or less commonly Nigrosin
or nigrosin
plural -s
often capitalized
: any of several azine dyes closely related to the indulines: such as
or Nigrosine Base B : an oil-soluble bluish black dye obtained as the free base by heating aniline and aniline hydrochloride and nitrobenzene or nitrophenol in the presence of iron and used chiefly in coloring waxes, shoe polish, plastics, and lacquers and as wood stains
or Nigrosine Spirit Soluble : a chloride of the free base that is soluble in alcohol and is used similarly
or Nigrosine Water Soluble : a water-soluble sulfonation product of the free base or of its chloride used chiefly in dyeing leather and paper and as a biological stain

Word History


Latin nigr-, niger black + English -ose + -ine or -in

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Dictionary Entries Near Nigrosine

Cite this Entry

“Nigrosine.” Dictionary, Merriam-Webster, Accessed 24 Apr. 2024.

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