Difference between revisions of "Dibromoindigo"
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6,6'-dibromoindigo; CI 75800 | 6,6'-dibromoindigo; CI 75800 | ||
| − | == | + | ==Physical and Chemical Properties== |
| − | Insoluble in organic solvents and water. Unaffected by alkalis. The color is lightfast except when exposed to nitric acid or chlorine bleaches. | + | * Insoluble in organic solvents and water. |
| + | * Unaffected by alkalis. | ||
| + | * The color is lightfast except when exposed to nitric acid or chlorine bleaches. | ||
| + | * CAS = 17670-06-3 | ||
| − | + | ==Resources and Citations== | |
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* Helmut Schweppe, Schweppe color collection index and information book Comment: CI 75800, ammonia-sodium dithionite vat or sodium hydroxide-sodium dithionite vat | * Helmut Schweppe, Schweppe color collection index and information book Comment: CI 75800, ammonia-sodium dithionite vat or sodium hydroxide-sodium dithionite vat | ||
Revision as of 09:19, 21 July 2022
Description
A synthetic coal tar dye of the same composition (6,6'-dibromoindigo) as Murex purple. Dibromoindigo was developed in 1904 causing the expensive natural product to became obsolete.
Synonyms and Related Terms
6,6'-dibromoindigo; CI 75800
Physical and Chemical Properties
- Insoluble in organic solvents and water.
- Unaffected by alkalis.
- The color is lightfast except when exposed to nitric acid or chlorine bleaches.
- CAS = 17670-06-3
Resources and Citations
- Helmut Schweppe, Schweppe color collection index and information book Comment: CI 75800, ammonia-sodium dithionite vat or sodium hydroxide-sodium dithionite vat