New fuchsin
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| Names | |
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| Other names
new fuchsin, Magenta III, Basic Violet 2, C.I. 42520
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| Identifiers | |
| ChEBI | |
| ECHA InfoCard | 100.019.847 |
| Properties | |
| C22H24N3Cl | |
| Appearance | dark red solid |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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| Infobox references | |
New fuchsine, (from German "fuchs", fox) is an organic compound with the formula [(CH3N(H)CH3C6H3)3C]Cl. It is a magenta-colored solid that is used as a dye. It is one of the four components of basic fuchsine, and one of the two that are available as single dyes. The other is pararosaniline.
It is prepared by condensation of N-methyltoluidine with xylidene in the presence of hydrochloric acid.
It is used to dye polyacrylonitrile, paper, and leather.
New fuchsine can be used for staining acid-fast organisms, e.g. by Ziehl-Neelsen stain, and for making Schiff's reagent. As a primary amine, the dye can be diazotized in the laboratory, and the resulting diazonium salt used as a trapping agent in enzyme histochemistry.
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