Sudan red B

Structural formula
General
Surname	Sudan red B
other names	1 - [[3-methyl-4 - [(3-methylphenyl) azo] phenyl] azo] -2-naphthol CI Solvent Red 25 CI 26110
Molecular formula	C 24 H 20 N 4 O
Brief description	dark red solid
External identifiers / databases
CAS number 3176-79-2 EC number 221-647-7 ECHA InfoCard 100.019.680 PubChem 99631 Wikidata Q27264817
properties
Molar mass	380.44 g mol −1
Physical state	firmly
Melting point	173-175 ° C
solubility	practically insoluble in water
safety instructions
GHS labeling of hazardous substances no GHS pictograms H and P phrases H: no H-phrases P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Sudan red B is a synthetically produced chemical compound from the group of azo and Sudan dyes .

properties

Sudan red B is a dark red solid that is practically insoluble in water.

use

Sudan red B is used as a dye in histology .

Individual evidence

1. ↑ ^{a b c d e f} Datasheet Sudan Red B, analytical standard at Sigma-Aldrich , accessed on November 10, 2016 ( PDF ).
2. ↑ ^{a b} Sumio Ozeki, Shoichi Ikeda: The difference in solubilization power between spherical and rodlike micelles of dodecyldimethylammonium chloride in aqueous solutions. In: The Journal of Physical Chemistry. 89, 1985, p. 5088, doi: 10.1021 / j100269a040 .