Chromotropic dyes
The chromotropic dyes are a group of azo dyes that are formed by reacting with chromotropic acid as a coupling component. They are used in some histological stains .
| Chromotropes | |||||
| Surname | Chromotrope 2B | Chromotrope 2R | Chromotrope 6B | Chromotrope 10B | |
| Structural formula |
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| colour | blue red | red | purple red | red-violet | |
| CAS number | 548-80-1 | 4197-07-3 | 4197-09-5 | 5850-63-5 | |
| PubChem | 68360 | 20172 | 160740 | 135870601 | |
| Color index | CI 16575 | CI 16570 | CI 18055 | CI 16640 | |
| Color name | Acid Red 176 | Acid Red 29 | Acid Violet 6 | Acid Violet 13 | |
| Molecular formula | C 16 H 9 N 3 Na 2 O 10 S 2 | C 16 H 10 N 2 Na 2 O 8 S 2 | C 20 H 16 N 4 Na 2 O 9 S 2 | C 20 H 12 N 2 Na 2 O 8 S 2 | |
| Molar mass | 513.37 g mol −1 | 468.37 g mol −1 | 566.47 g mol −1 | 518.43 g mol −1 | |
| solubility in water | easily soluble in water (160 g l −1 ) | ||||
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GHS labeling |
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| H and P phrases | 315-319-335 | ||||
| no EUH phrases | |||||
| 280-302 + 352-305 + 351 + 338 | |||||
Individual evidence
- ^ Fritz Mayer: Chemistry of organic dyes . Springer, 1921, p. 55.
- ↑ World dye variety: Acid Red 176
- ↑ World dye variety: Acid Red 29
- ↑ World dye variety: Acid Violet 6
- ↑ World dye variety: Acid Violet 13
- ↑ a b c Data sheet Chromotrop 2R (PDF) from Carl Roth , accessed on December 17, 2013.