PRODUCT IDENTIFICATION

278.31

O=C1N(N=C(C)[C@@H]1\N=N\c1ccccc1)c1ccccc1

CLASSIFICATION

Azo dye, Solvent dye, Pyrazolone

EXTRA NOTES

PHYSICAL AND CHEMICAL PROPERTIES

SOLVENT SOLUBILITY

Acetone (17), Butyl acetate (29), Toluene (68), EtOH (5)

AUTOIGNITION

REFRACTIVE INDEX

EXTERNAL LINKS & GENERAL DESCRIPTION

Wikipedia Linking - Sudan Yellow 3G

Google Scholar Search - Sudan Yellow 3G

Drug Information Portal (U.S. National Library of Medicine) - Solvent Yellow 16

PubChem Compound Summary - Solvent Yellow 16

KEGG (Kyoto Encyclopedia of Genes and Genomes) - Solvent Yellow 16

http://www.ebi.ac.uk/ - Sudan Yellow 3G

http://www.ncbi.nlm.nih.gov/ - Solvent Yellow 16

http://toxnet.nlm.nih.gov/
Hazardous Substances Data Bank - Solvent Yellow 16

Local:
Sudan is a group of solvent dye, frequently called lysochrome (Lyso- means dissolving and -chrome means colour). In structural classification, sudan belongs to diazo dye. Azo colorant molecule can be described as aryl-N=N-R, where R is aryl, heteroaryl or -CH=C(OH)-. Solvent dyes are insoluble in water but soluble in nonpolar organic solvents and fats. It is usually used as a solution in an organic solvent. Azo structure solvent dyes are often responsible yellow-red color whereas anthraquinone structure solvent dyes tend to be green-blue. Some other structures for solvent dyes include heterocyclic rings, metal complex, pyrazolone, xanthene, and ketoamine. Solvent dyes do not ionise. Solvent dye, undergoing molecular rearrangement, is dissoluted in the substrate. It colours and binds to the lipids resulting in showing colored regions. In industrial field, it is used in coloring oils, waxes, greases, fats, hydrocarbons derivatives, polishes, oily insecticides, and acrylic emulsions. Sudans are used for demonstrating fats, triglycerides and lipoproteins present in tissues as biological stains.

• Sudan I [Solvent Orange R, CAS #: 842-07-9]; a yellow lysochrome; C.I. solvent yellow 14; carcinogen suspect. Chemically 1-phenylazo-2-naphthol.
• Sudan II [Solvent Orange 7, CAS #: 3118-97-6]; an orange lysochrome; C.I. Solvent Orange 7; carcinogen suspect. Chemical designation 1-(2,4-Dimethylphenylazo)-2-naphthol
• Sudan III [Sudan Red, CAS #: 85-86-9] A red lysochrome; C.I. Solvent Red 23; used as a stain for the demonstration of triglycerides and fats. Chemical designation 1-[4-(Phenylazo)phenylazo]-2-naphthol.
• Sudan IV [Scarlet Red, CAS #: 85-83-6] A scarlet red lysochrome; Solvent Red 24; used as a stain for the demonstration of triglycerides and fats. deeper stain than Sudan III,Chemical designation 1-[[2-methyl-4-[(2-methylphenyl)azo]phenyl]azo]-2-Naphthalenol
• Sudan Black B [CAS #: 4197-25-5],  a black lysochrome; Solvent Black 3; used as a stain for the demonstration of fat vacuoles in bacterial cells. Cleared with xylol and counterstained with safranin. Chemical designation 2,3-Dihydro-2,2-dimethyl-6-[[4-(phenylazo)-1-naphthyl]azo]-1H-Perimidine.

APPEARANCE

orange to red powder

SUDAN PRODUCTS