Sudan Red 7B

Synonym(s):Fat Red 7B;Fat red bluish;Solvent Red 19

CAS NO.：6368-72-5
Empirical Formula: C24H21N5
Molecular Weight: 379.46
MDL number: MFCD00003904
EINECS: 228-862-5
SAFETY DATA SHEET (SDS)
Update Date: 2024-03-08 14:14:56

What is Sudan Red 7B?

Chemical properties

bordeaux crystalline powder

The Uses of Sudan Red 7B

Sudan Red 7B is a fat soluble dye. Sudan Red 7B 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.

What are the applications of Application

Sudan Red 7B is a lipid soluble, diazo dye useful for staining fats in plant and animal tissues

Preparation

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

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.

Safety Profile

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

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

Properties of Sudan Red 7B

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
Colour Index	26050
form	Powder
pka	3.58±0.40(Predicted)
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)