Sudan Red 7B

Sudan Red 7B, also known as Solvent Red 19, Ceres Red 7B, Fat Red 7B, Hexatype carmine B, Lacquer red V3B, Oil violet, Organol bordeaux B, Sudanrot 7B, Typogen carmine, and C.I. 26050, is a red diazo dye.[1][2][3] Chemically it is N-ethyl-1-[[p-(phenylazo)phenyl]azo]-2-naphthalenamine. It is soluble in oils and insoluble in water.

Sudan Red 7B
Names
Preferred IUPAC name
N-Ethyl-1-{[4-(phenyldiazenyl)phenyl]diazenyl}naphthalen-2-amine
Other names
Solvent Red 19; Ceres Red 7B; Fat Red 7B; Hexatype carmine B; Lacquer red V3B; Oil violet; Organol bordeaux B; Sudanrot 7B; Typogen carmine; C.I. 26050; N-ethyl-1-[[p-(phenylazo)phenyl]azo]-2-naphthalenamine
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.026.238
KEGG
UNII
  • InChI=1S/C24H21N5/c1-2-25-23-17-12-18-8-6-7-11-22(18)24(23)29-28-21-15-13-20(14-16-21)27-26-19-9-4-3-5-10-19/h3-17,25H,2H2,1H3/b27-26+,29-28+ checkY
    Key: VKWNTWQXVLKCSG-ZDXBJJIESA-N checkY
  • InChI=1/C24H21N5/c1-2-25-23-17-12-18-8-6-7-11-22(18)24(23)29-28-21-15-13-20(14-16-21)27-26-19-9-4-3-5-10-19/h3-17,25H,2H2,1H3/b27-26+,29-28+
    Key: VKWNTWQXVLKCSG-ZDXBJJIEBU
  • N(=N/c3ccc(/N=N/c1c2c(ccc1NCC)cccc2)cc3)\c4ccccc4
Properties
C24H21N5
Molar mass 379.467 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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Infobox references

It is used in biology for staining, and in industry as one of the fuel dyes. It can be also present in red laser toners.

References
  1. PubChem. "Sudan Red 7B". pubchem.ncbi.nlm.nih.gov. Retrieved 2022-11-22.
  2. "Sudan Red 7B | CAS 6368-72-5". www.scbt.com. Retrieved 2022-11-22.
  3. "Sudan Red 7B (CAS 6368-72-5)". www.caymanchem.com. Retrieved 2022-11-22.
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