fuchsin - magenta, the hydrochloride of rosaniline, a basic triphenylmethane dyestuff, dark green crystals, dissolving in water to form a purple-red solution
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DE: p-Rosanilin (basisches Fuchsin) [T45102]
FR: chlorhydrate de p-rosaniline (fuchsine basique) [T45102]
FI: p-rosaniliinivetykloridi (perusfuksiini) [T45102]
Dissolve 5,0 g powdered p-rosaniline hydrochloride with about 1000 ml hot water in a 2000 ml volumetric flask. Leave in the water bath until completely dissolved if necessary. Dissolve 30 g anhydrous sodium sulphite (or an equivalent quantity of sodium metabisulphite) in circa 200 ml water and add to the cool p-rosaniline solution.
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