2429-76-7

Basic information

• Product Name: Acid Yellow 44
• Synonyms: ACID YELLOW 44;CI ACID YELLOW 44;Disodium 5-[[1,3-dioxo-1-(phenylamino)butan-2-yl]azo]-2-[4-[[1,3-dioxo-1-(phenylamino)butan-2-yl]azo]-5-methyl-2-sulfonatophenyl]-4-methylbenzenesulfonate;Acid Yellow 6G;disodium 5,5'-dimethyl-4,4'-bis[[2-oxo-1-[(phenylamino)carbonyl]propyl]azo][1,1'-biphenyl]-2,2'-disulphonate;Brilliant Yellow 6G;(1,1'-biphenyl)-2,2'-disulfonic acid, 4,4'-bis((2-oxo-1-((phenylamino)carbonyl;[1,1'-Biphenyl]-2,2'-disulfonic acid, 5,5'-dimethyl-4,4'-bis[[2-oxo-1-[(phenylamino) carbonyl]propyl]azo]-, disodium salt
• CAS NO: 2429-76-7
• Molecular Formula: C34H30N6Na2O10S2
• Molecular Weight: 792.75
• EINECS: 219-386-9
• Product Categories: Dyes and Pigments;Organics
• Mol File: 2429-76-7.mol
• Article Data: 0

Chemical Properties

• Appearance: Yellow powder
• CAS DataBase Reference: Acid Yellow 44(CAS DataBase Reference)
• NIST Chemistry Reference: Acid Yellow 44(2429-76-7)
• EPA Substance Registry System: Acid Yellow 44(2429-76-7)

Safety Data

• Hazardous Substances Data: 2429-76-7(Hazardous Substances Data)

Usage

Description

Acid Yellow 44 is a synthetic dye characterized by its green light yellow color and yellow powder form. It is soluble in water, displaying a bright green light yellow hue, and is slightly soluble in ethanol, acetone, and soluble fiber elements. When exposed to strong sulfuric acid, it turns dark yellow and turns green light yellow upon dilution. It reacts with nitric acid to produce a red orange color, which then lightens to yellow. Its water solution turns red when mixed with strong hydrochloric acid, while it remains yellow in alkali solution.

Uses

Used in Textile Industry:
Acid Yellow 44 is used as a direct dye for silk, polyamide fiber, and wool dyeing and printing. It is favored for its ability to produce vibrant colors and is known for its light fastness, soaping fastness, perspiration fastness, oxygen bleaching, and fastness to seawater. The dye has received ratings of ISO 4-5 for light fastness, ISO 5 for soaping and perspiration fastness, and ISO 5 for oxygen bleaching and fastness to seawater. Additionally, it has received AATCC ratings of 5 for light fastness, 3-4 for soaping and perspiration fastness, and 4-5 for oxygen bleaching.
Used in Leather Industry:
Acid Yellow 44 is also utilized in the leather industry for dyeing, where it provides similar benefits in terms of color vibrancy and fastness properties. It has received AATCC ratings of 4 for light fastness and 4 for both fading and staining resistance.

Preparation

5-Amino-2-(4-amino-5-methyl-2-sulfophenyl)-4-methylbenzenesulfonic acid double nitriding, and 3-Oxo-N-phenylbutanamide (2 Moore) coupled.

Standard

Light Fastness

Fading

Stain

ISO

4

AATCC

5

InChI:InChI=1/C34H32N6O10S2.2Na/c1-19-15-25(29(51(45,46)47)17-27(19)37-39-31(21(3)41)33(43)35-23-11-7-5-8-12-23)26-16-20(2)28(18-30(26)52(48,49)50)38-40-32(22(4)42)34(44)36-24-13-9-6-10-14-24;;/h5-18,31-32H,1-4H3,(H,35,43)(H,36,44)(H,45,46,47)(H,48,49,50);;/q;2*+1/p-2