Chemistry:Acid Violet 13
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3D model (JSmol)
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| C20H12N2Na2O8S2 | |
| Molar mass | 518.42 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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Color Index Acid Violet 13 is a chemical compound belonging to the azo and acid dye classes. It is a chromotropic dye originally used for dyeing wool.[1]
Synthesis
Acid Violet 13 is synthesized via the diazotization of 1-aminonaphthalene using sodium nitrite and hydrochloric acid, followed by azo coupling of the resulting diazonium salt with chromotropic acid.[1][2]
Use
Acid Violet 13 is used to dye wool in a reddish-violet shade.[3] The addition of chromium salts, such as potassium dichromate, during the dyeing process induces a distinct color shift from reddish-violet to blue-black.[2]
History
The production of the dye was patented by Hoechst in 1890. As with other chromotropic acid-based dyes described in the patents, its application in wool printing is particularly emphasized.[2]
References
- ↑ 1.0 1.1 Gustav Schultz, Paul Julius (1897), Tabellarische Übersicht der im Handel befindlichen künstlichen organischen Farbstoffe (3 ed.), Berlin: B.Gaertner's Verlagsbuchhandlung, pp. 22, https://archive.org/details/b21980408/page/22/mode/2up?view=theater
- ↑ 2.0 2.1 2.2 "Verfahren zur Darstellung von Azofarbstoffen aus einer neuen Dioxynaphthalindisulfonsäure" DE patent 69095, published 1894-05-16
- ↑ P. Heermann, ed. (1930), Enzyklopädie der textilchemischen Technologie, Berlin, Heidelberg: Springer-Verlag, pp. 480, doi:10.1007/978-3-642-94236-5, https://books.google.com/books?id=mz_PBgAAQBAJ&pg=PA480
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