Fuchsine
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Fuchsine, fuchsin, rosanilin, or rosaniline hydrochloride is a magenta dye with chemical formula C19H17N3·HCl. It becomes magenta when dissolved in water; as a solid, it forms dark green crystals. Its inventor, the 19th century French company Renard, named the dye after the German translation of the company's name, fuchs (fox).
As well as dying textiles, fuchsine is used to stain bacteria and sometimes as a disinfectant.
Its CAS number is [569-61-9] [1] and its SMILES structure is [NH2+]=C(C=C2) C=C/C2=C(C3=CC (C)=C(N)C=C3) \C1=CC=C (N)C=C1.
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[edit] Acid fuchsine
Acid fuchsine is a mixture of homologues of basic fuchsin, modified by addition of sulfonic groups. While this yields twelve possible isomers, all of them are satisfactory despite slight differences in their properties.
[edit] Basic fuchsine
Basic fuchsine is a mixture of rosanilin, pararosanilin, and Magenta II. Formulations usable for making of Schiff reagent must have high content of pararosanilin. The actual composition of basic fuchsine tends to somewhat vary by vendor and batch, making the batches differently suitable for different purposes.
In solution with phenol as an accentuator is is called carbol fuchsin and is used for the staining of the bacterium which cause tuberculosis.
[edit] See also
- New fuchsine and Fuchsine acid are related dyes
- Fuchsine is a component in the Schiff test
[edit] External links
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