SUDAN III

PRODUCT IDENTIFICATION

 
CAS NO 85-86-9

SUDAN III

EINECS NO. 201-638-4
FORMULA C22H16N4O
MOL WT. 352.39
H.S. CODE 3204.90.0000
TOXICITY  
SYNONYMS Fat Ponceau G; Cerasin Red;
1-[4-(Phenylazo)phenylazo]-2-naphthol; C.I. 26100; D & C Red No.17; Oil Scarlet; Solvent Red 23; Sudan Red; Sudan Red III; Sudan V; Tony Red; Sudan Red B; Sudan G; Scarlet B; Cerasin Red; Fat Ponceau G; Fat Soluble Sudan; Scarlet B; Sudan G; Sudan Red BK; Tony Red;
SMILES

c12c(\N=N\c3ccc(\N=N\c4ccccc4)cc3)c(ccc1cccc2)O

CLASSIFICATION

Sudan stain

EXTRA NOTES

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE Reddish brown crystals
MELTING POINT 199 C
BOILING POINT  
SPECIFIC GRAVITY

 

SOLUBILITY IN WATER Insoluble
AUTOIGNITION  
pH  
VAPOR DENSITY  
NFPA RATINGS  

AUTOIGNITION

 

REFRACTIVE INDEX

 

FLASH POINT

 

STABILITY Stable under normal conditions.

APPLICATIONS
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; 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; 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; 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.

 

Sudan Product

C.I. Name

C.I. No.

CAS No.

Sudan Yellow 1339   10335 119-75-5
Sudan Yellow R Solvent Yellow 1 11000 60-09-3
Sudan Red B Solvent Red 25

 

 3176-79-2
Sudan Yellow GG

Solvent Yellow 2

11020

 60-11-7
Scarlet Red Solvent Red 24 26105 85-83-6
Sudan III Solvent Red 23 26100 85-86-9
Fat Yellow B

Solvent Yellow 3

11160

 97-56-3
Sudan Green 4B Solvent Green 3 61565 128-80-3
Sudan Blue GA Solvent Blue 11 61525 128-85-8
Sudan I Solvent Yellow 14 12055 842-07-9
Sudan Red G Solvent Red 1 12150 1229-55-6
Sudan Orange G Solvent Orange 1 11920 2051-85-6
Sudan Yellow GGN Solvent Yellow 56 11021 2481-94-9
Sudan Red 2R Pigment Red 40 12170 2653-64-7
Sudan Red Solvent Orange 7 12140 3118-97-6
Sudan Black B Solvent Black 3 26150 4197-25-5
Sudan Yellow 3G Solvent Yellow 16 12700 4314-14-1
Fat red 7B Solvent Red 19 26050 6368-72-5
Sudan Blue B Solvent Blue 63 61520 6408-50-0
Fat Brown RR Solvent Brown 1 11285 6416-57-5
Sudan Blue

 

 

 6994-46-3
Sudan Black

 

 

 56996-93-1

 
SALES SPECIFICATION

APPEARANCE

 Reddish brown crystals

DYE CONTENT

90.0% min

ABSORPTION max 507(304) nm
TRANSPORTATION
PACKING  
HAZARD CLASS  
UN NO.  
OTHER INFORMATION
Hazard Symbols: , Risk Phrases: , Safety Phrases: 22-24/25

BIOLOGICAL STAINS, INDICATORS