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Sudan Red 7B

Basic information Safety Supplier Related

Sudan Red 7B Basic information

Product Name:
Sudan Red 7B
Synonyms:
  • 2-Naphthalenamine, N-ethyl-1-4-(phenylazo)phenylazo-
  • N-ETHYL-1-((PARA-(PHENYLAZO)PHENYL)AZO)-2-NAPHTHYLAMINE
  • Fat Red 7B, Fat red bluish, Solvent Red19
  • Sudan Red 7B,Fat Red 7B, Fat red bluish, Solvent Red19
  • Sudan Red 7B/Solvent Red 19
  • Sudan Red 7B 50GR
  • Sudan Red 7B 5GR
  • Fat red 7B, Molecular Biology
CAS:
6368-72-5
MF:
C24H21N5
MW:
379.46
EINECS:
228-862-5
Product Categories:
  • Organics
Mol File:
6368-72-5.mol
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Sudan Red 7B Chemical Properties

Melting point:
130 °C (dec.)(lit.)
Boiling point:
497.32°C (rough estimate)
Density 
1.3490 (rough estimate)
refractive index 
1.6300 (estimate)
storage temp. 
Amber Vial, Refrigerator, Under inert atmosphere
solubility 
Chloroform, DMSO, Methanol
pka
3.58±0.40(Predicted)
Colour Index 
26050
form 
Powder
color 
Maroon
BRN 
3534323
Stability:
Light Sensitive
CAS DataBase Reference
6368-72-5
IARC
3 (Vol. 8, Sup 7) 1987
EPA Substance Registry System
2-Naphthalenamine, N-ethyl-1-[2-[4-(2-phenyldiazenyl)phenyl]diazenyl]- (6368-72-5)
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Safety Information

Hazard Codes 
Xn
Risk Statements 
22
Safety Statements 
37/39-26
WGK Germany 
3
RTECS 
QM2850000
HS Code 
32041900

MSDS

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Sudan Red 7B Usage And Synthesis

Chemical Properties

bordeaux crystalline powder

Uses

Sudan Red 7B is a fat soluble dye. It has been used to study the effects of emulsifying agents on disposition of lipid soluble drugs included in fat emulsion. Dyes and metabolites, Environmental Testing.

Definition

ChEBI: Sudan Red 7B is a member of azobenzenes. It is effectively used to stain lipids and is used to indicate the presence of suberin in cell walls.

Preparation

4-(Phenyldiazenyl)benzenamine diazotization, and N-ethylnaphthalen-2-amine coupling.

Safety Profile

Questionable carcinogen with experimental tumorigenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx.

Staining Procedures

The stain is dissolved (0.1 % w/w) in polyethylene glycol 400 glycerol (1+9). Lipids are positive. It is especially good for demonstrating the presence of suberin.

Properties and Applications

brilliant blue light red. Soluble in ethanol for cherry red, soluble in acetone and benzene. In concentrated sulfuric acid for brilliant green blue, blue purple for after diluted to bordeaux red

Standard Light Fastness Heat-resistant(℃) water Sodium Carbonate(5%) Hydrochloric acid(5%)
Melting point Stable
ISO Poor 128-131.5 100-120≥ 100

Sublimation

Insoluble Well No change

Sudan Red 7BSupplier

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