5,5 ', 7,7'-tetrabromoindigo
Structural formula | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
General | |||||||||||||||||||
Surname | 5,5 ', 7,7'-tetrabromoindigo | ||||||||||||||||||
other names |
|
||||||||||||||||||
Molecular formula | C 16 H 6 Br 4 N 2 O 2 | ||||||||||||||||||
Brief description |
Dark blue powder |
||||||||||||||||||
External identifiers / databases | |||||||||||||||||||
|
|||||||||||||||||||
properties | |||||||||||||||||||
Molar mass | 577.85 g mol −1 | ||||||||||||||||||
Physical state |
Firmly |
||||||||||||||||||
density |
2.313 g cm −3 |
||||||||||||||||||
solubility |
|
||||||||||||||||||
safety instructions | |||||||||||||||||||
|
|||||||||||||||||||
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
5,5 ', 7,7'-tetrabromoindigo is a chemical compound of indigo dyes .
Presentation and extraction
5,5 ', 7,7'-Tetrabromoindigo can be prepared as reaction medium by bromination of indigo in thionyl chloride , nitrobenzene or glacial acetic acid .
Individual evidence
- ^ A b Klaus Hunger: Industrial Dyes: Chemistry, Properties, Applications . Wiley-VCH Verlag GmbH & Co. KGaA; 1st edition 2002; ISBN 3-527-30426-6 , page 213.
- ↑ Wolfgang Kerber (editor), Wolfgang Reiter (editor) and Rudolf Werner Soukup (editor): The scientific world of yesterday . Böhlau Vienna; 1st edition 2004; ISBN 978-3205773030 ; Page 139.
- ↑ a b Entry on 5,5 ′, 7,7′-tetrabromoindigo. In: Römpp Online . Georg Thieme Verlag, accessed on December 4, 2014.
- ↑ American Chemicals: 3H-Indol-3-one, 5,7-dibromo-2- (5,7-dibromo-1,3-dihydro-3-oxo-2H-indol-2-ylidene) -1,2- dihydro- ( Memento of December 10, 2014 in the Internet Archive ), accessed on December 4, 2014.
- ↑ a b Grandmougin, E .: On the knowledge of 5.7.5'.7'-tetrabromo-indigo in Chem. Ber. 42 (1909) 4408-4411, doi : 10.1002 / cber.19090420433 .
- ↑ a b World Dye Varity: Vat Blue 5 , accessed December 4, 2014.
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ↑ Process for the production of halogenated indigo - Document DE4110458A1. In: patent-de.com. March 30, 1991, accessed December 28, 2014 .
- ↑ Steingruber, E .: Indigo and Indigo Colorants in Ullmann's Encyclopedia of Technical Chemistry, 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, doi : 10.1002 / 14356007.a14_149.pub2 .
Web links
- World dye variety: Vat Blue 5 , accessed December 4, 2014