56548-64-2

Basic information

• Product Name: Disperse Blue 291
• Synonyms: DISPERSE BLUE 291;c.i. 113395;n-[2-[(2-bromo-4,6-dinitrophenyl)azo]-5-(diethylamino)-4-methoxyphenyl]-acetamide;Disperse Navy Blue S-BGF300;Acetamide, N-2-(2-bromo-4,6-dinitrophenyl)azo-5-(diethylamino)-4-methoxyphenyl-;2'-[(2-Bromo-4,6-dinitrophenyl) azo]-5'-(diethylamino)-p-acetanisidide;2'-[(2-bromo-4,6-dinitrophenyl) azo]-5'-diethylamino-p-Acetanisidide;5-(2-bromo-4,6-dinitrophenylazo)-2-N,N-diethylamino-p-Acetanisidide
• CAS NO: 56548-64-2
• Molecular Formula: C₁₉H₂₁BrN₆O₆
• Molecular Weight: 509.31064
• EINECS: 260-255-0
• Product Categories: Organics
• Mol File: 56548-64-2.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 700.4 °C at 760 mmHg
• Flash Point: 377.4 °C
• Appearance: /
• Density: 1.54
• Vapor Pressure: 1.82E-19mmHg at 25°C
• Refractive Index: 1.638
• PKA: 13.43±0.70(Predicted)
• CAS DataBase Reference: Disperse Blue 291(CAS DataBase Reference)
• NIST Chemistry Reference: Disperse Blue 291(56548-64-2)
• EPA Substance Registry System: Disperse Blue 291(56548-64-2)

Safety Data

• Hazardous Substances Data: 56548-64-2(Hazardous Substances Data)

Usage

Description

Disperse Blue 291 is a synthetic, commercial disperse dye characterized by its blue color and dispersibility in water. It is a member of the azo dyes family, which are known for their vibrant colors and wide range of applications in various industries.

Uses

Used in Textile Industry:
Disperse Blue 291 is used as a fabric dye for coloring synthetic fibers such as polyester, nylon, and acrylic. Its high solubility and affinity for these fibers make it an ideal choice for producing vibrant and long-lasting colors in textiles.
Used in Printing Industry:
In the printing industry, Disperse Blue 291 serves as a colorant for inkjet and screen printing processes. Its ability to produce consistent and intense colors makes it suitable for various printing applications, including fashion, home textiles, and graphic arts.
Used in Environmental Testing:
Disperse Blue 291 is utilized as a tracer compound in environmental testing to monitor the presence and behavior of pollutants in water systems. Its unique properties allow researchers to track and analyze the movement and distribution of contaminants, aiding in the development of effective water treatment strategies.
Used in Metabolite Analysis:
In the field of metabolomics, Disperse Blue 291 is employed as a reference dye for analyzing and identifying metabolites in biological samples. Its distinct spectral characteristics enable accurate detection and quantification of various metabolites, contributing to a better understanding of metabolic pathways and their role in health and disease.

Preparation

2,4-Dinitro-6-bromoaniline diazo, and N-(3-(diethylamino)-4-methoxyphenyl)acetamide?coupling.

Standard

Ironing Fastness

Fading

Stain

AATCC

3

InChI:InChI=1/C19H21BrN6O6/c1-5-24(6-2)16-9-14(21-11(3)27)15(10-18(16)32-4)22-23-19-13(20)7-12(25(28)29)8-17(19)26(30)31/h7-10H,5-6H2,1-4H3,(H,21,27)

Upstream product

• 19433-93-3 3-acetylamino-6-methoxy-N,N-diethylaniline 
• 1817-73-8 2-bromo-4,6-dinitroaniline 
• 7782-78-7 nitrosylsulfuric acid 

Relevant articles and documents

Composition of Black Disperse Dye

The present invention relates to a black disperse dye composition, more specifically, to a black disperse dye composition capable of improving the milling efficiency of a blue dye component of a black disperse dye and increasing, water dispersibility, improving aging stability, (clogging) color fastness during fiber dyeing. (by machine translation)

Azo disperse dye mixtures

The present invention refers to a dye mixture comprising an azo dye of the formula (I) wherein each of X and X1independently is chlorine or bromine; R1is absent or is C1-4alkyl; and each of R2and R3independently is hydrogen, C1-6alkyl or cyanoethyl; but when R1is absent, R2is n-butyl or cyanoethyl and R3is cyanoethyl; and further dye components according to claim 1, a method for the preparation of such mixtures and a method for coloring a synthetic textile material or fiber blend thereof using such mixtures.

Mutagenicity of two 2-phenylbenzotriazole derivatives, 2-[2-(acetylamino)-4-(diethylamino)-5-methoxyphenyl]-5-amino- 7-bromo-4-chloro-2H-benzotriazole and 2-[2-(acetylamino)-4-(diallylamino)-5-methoxyphenyl]-5-amino-7-bromo-4-chloro-2H-benzotriazole and their detection in river water in Japan.

We recently detected five 2-phenylbenzotriazole (PBTA)-type mutagens (PBTA-1, PBTA-2, PBTA-3, PBTA-4 and PBTA-6) in concentrates from several rivers that flow in geographically different areas in Japan containing textile-related industries. On the basis of synthesis studies, these five PBTA derivatives were deduced to have originated from the corresponding dinitrophenylazo dyes, which are industrial chemicals used in textile dyeing, via reduction and chlorination. 2-[(2-Bromo-4,6-dinitrophenyl)azo]-5-(diethylamino)-4-methoxyacetanilide (Color Index name Disperse Blue 291, CAS registry no. 56548-64-2) and 2-[(2-bromo-4,6-dinitrophenyl)azo]-5-(diallylamino)-4-methoxyacetanilide (Color Index name Disperse Blue 373, CAS registry no. 51868-46-3) are used in textile dyeing and have 2-[(2-bromo-4,6-dinitrophenyl)azo]-4-methoxyacetanilide moieties in their structures, which are thought to be essential for their conversion to mutagenic PBTA derivatives. In the present study we have synthesized 2-[2-(acetyl-amino)-4-(diethylamino)-5-methoxyphenyl]-5-amino-7-bromo-4-chloro-2H-benzotriazole (PBTA-7) and 2-[2-(acetylamino)-4-(diallylamino)-5-methoxyphenyl]-5-amino-7-bromo-4-chloro-2H-benzotriazole (PBTA-8) from Disperse Blue 291 and Disperse Blue 373, respectively, by reduction with iron powder and subsequent chlorination with sodium hypochlorite. Both PBTA-7 and PBTA-8 exerted strong mutagenicity in Salmonella typhimurium TA98 and YG1024 in the presence of S9 mix (43 000 and 1 430 000 revertants/nmol for PBTA-7 and 40 700 and 2 213 000 revertants/nmol for PBTA-8 in TA98 and YG1024). To clarify whether PBTA-7 and PBTA-8 exist in the environment, water samples were collected at seven sites in six rivers flowing through two different regions where textile dyeing industries are located. All water samples were mutagenic in Salmonella typhimurium YG1024 with S9 mix and their potencies ranged from 108 000 to 1 990 000 revertants/g blue rayon. PBTA-7 and PBTA-8 were detected in water samples from both regions at levels of 0.1-101.4 ng/g blue rayon and 0.1-48.9 ng/g blue rayon, respectively. In some samples PBTA-7 and PBTA-8 could contribute up to 15% of the water mutagenicity.