Sudan Red 7B

Sudan Red 7B

Names
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
CAS Registry Number	6368-72-5
ChemSpider	55325 Y
InChI 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+ Y Key: VKWNTWQXVLKCSG-ZDXBJJIESA-N Y 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
Jmol-3D images	Image
KEGG	C19529 Y
PubChem	61396
SMILES N(=N/c3ccc(/N=N/c1c2c(ccc1NCC)cccc2)cc3)\c4ccccc4
Properties
Molecular formula	C24H21N5
Molar mass	379.46 g·mol−1
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

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. Chemically it is N-ethyl-1-[[p-(phenylazo)phenyl]azo]-2-naphthalenamine. It is soluble in oils and insoluble in water.

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.