Description

3-[[3-[(2,4-Dihydroxyphenyl)Azo]-4-Hydroxyphenyl]Azo]Benzenesulphonic Acid is a high-purity, synthetic azo dye intermediate with a distinct molecular structure. This compound is valued for its ability to impart specific color properties and act as a key building block in the synthesis of complex dyes and pigments. It is primarily required by manufacturers in the textile, leather, and specialty chemical industries for producing vibrant and stable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a crucial precursor in the synthesis of acid dyes and direct dyes for coloring nylon, wool, silk, and leather.
• Textile Industry: Used in the production of dyes for fabrics requiring good wash and light fastness.
• Leather Finishing: Employed in the formulation of dyes for high-quality leather goods.
• Paper Coloring: Acts as a colorant intermediate for specialty papers.
• Ink Manufacturing: Utilized in the production of inks for various printing applications.
• Research & Development: Serves as a standard or reagent in chemical research for developing new chromophores and studying azo chemistry.

Basic Information

Product Name	3-[[3-[(2,4-Dihydroxyphenyl)Azo]-4-Hydroxyphenyl]Azo]Benzenesulphonic Acid
CAS No.	94086-88-1
Molecular Formula	C24H18N4O6S
Molecular Weight	490.49 g/mol
Synonyms	Benzenesulfonic acid, 3-[[3-[(2,4-dihydroxyphenyl)azo]-4-hydroxyphenyl]azo]-; 3,3'-(1,3-Phenylenebis(azo))bis(4-hydroxybenzenesulfonic acid); Azo dye intermediate 94086-88-1; Tris-azo dye intermediate; 4-Hydroxy-3-[(E)-[4-[(E)-(3-sulfophenyl)diazenyl]-2-hydroxyphenyl]diazenyl]phenol
EINECS	Contact for details

Quality Control

Our 3-[[3-[(2,4-Dihydroxyphenyl)Azo]-4-Hydroxyphenyl]Azo]Benzenesulphonic Acid is produced under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and performance as a dye intermediate. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with each shipment to guarantee compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.