Gallocyanin
| Structural formula | |||||||||||||||||||
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| General | |||||||||||||||||||
| Surname | Gallocyanin | ||||||||||||||||||
| other names |
7-dimethylamino-4-hydroxy-3-oxo-phenoxazine-1-carboxylic acid |
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| Molecular formula | C 15 H 13 ClN 2 O 5 | ||||||||||||||||||
| Brief description |
black solid |
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| properties | |||||||||||||||||||
| Molar mass | 336.73 g mol −1 | ||||||||||||||||||
| Physical state |
firmly |
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| solubility |
sparingly soluble in hot water, ethanol and glacial acetic acid |
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | |||||||||||||||||||
Gallocyanin is a chemical compound from the group of phenoxazine dyes .
Extraction and presentation
Gallocyanin can be obtained by reacting nitrosodimethylaniline with gallic acid .
properties
Gallocyanin is a black solid that is sparingly soluble in hot water. Alkalis easily dissolve it with reddish-purple color.
use
Gallocyanin is used for calico printing and wool dyeing. With alum it forms a chelate complex , which in gallocyanin-alum stain for nucleic acids is used. This was introduced in 1921 by Ernst Siegfried Becher .
Individual evidence
- ↑ a b c d e data sheet Gallocyanin, Dye content 90% from Sigma-Aldrich , accessed on October 14, 2018 ( PDF ).
- ^ A b Rudolf Nietzki: Chemistry of organic dyes . BoD - Books on Demand, 2017, p. 223 ( limited preview in Google Book search).
- ↑ a b Georg Lunge, Ernst Berl: Chemical-technical investigation methods . tape 3 . Springer-Verlag, 2013, ISBN 978-3-662-38269-1 , pp. 1071 ( limited preview in Google Book search).
- ↑ S. Becher: Investigations on real staining of cell nuclei with artificial stain dyes and the theory of the histological staining process with dissolved lacquers. Borntraeger brothers, Berlin 1921.
- ↑ Hans Lyon: Theory and Strategy in Histochemistry - A Guide to the Selection and Understanding of Techniques . Springer Science & Business Media, 2012, ISBN 978-3-642-73742-8 , pp. 117 ( limited preview in Google Book search).
- ↑ L. Heilmeyer: Blood and Blood Diseases . Part 1: General Hematology and Physiopathology of the Erythrocytic System . Springer-Verlag, 2013, ISBN 978-3-642-95036-0 , pp. 141 ( limited preview in Google Book search).