Artificial dye-stuffs; their nature, manufacture, and uses (1917)
Ramsey, Albert R. J, Weston, H. Claude (Hubert Claude) · London, Routledge; New York, Dutton · leaf 168
reen. If methylene blue is dissolved insulphuric or acetic acid and the solution is treated withnitric or nitrous acid, a mono-nitro derivative is formed*which dyes mordanted cotton bluish-green shades, andis therefore known as methylene green. Gentianine is a bluish-violet dye for mordantedcotton,… … NH. HCl The commercial product is, however, the zinc chloridedouble salt of the dye-stuff, and is a soluble reddish-brown powder. New Methylene Blue N. is also a dye for tannin-mordanted cotton, and gives more purple-blue shadesthan methylene blue. The general process for its 154 AZINE AND…
Dyes and dyeing
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