Description

Disodium 7-[[4-[[4-[[4-(Benzoylamino)Benzoyl]Amino]-o-Tolyl]Azo]Phenyl]Azo]Naphthalene-1,3-Disulphonate is a high-purity, synthetic azo dye intermediate characterized by its disulphonate groups, which impart excellent water solubility and stability. This compound is essential for producing vivid and durable colorants, offering superior performance in demanding applications where color fastness and consistency are critical. It is primarily utilized by manufacturers in the textile dyeing, ink formulation, and specialty chemical synthesis industries.

Application

• Textile Dyeing: A key intermediate for synthesizing high-performance, water-soluble azo dyes for coloring natural and synthetic fibers.
• Ink Manufacturing: Used in the production of pigments and dyes for industrial inks, including those for packaging and printing.
• Specialty Chemical Synthesis: Serves as a versatile building block for creating complex colorants and functional chemicals in research and development.
• Leather Processing: Employed in the formulation of dyes for achieving consistent and deep coloration on leather goods.
• Paper Coloring: Used in the manufacture of dyes for specialty papers and decorative applications.
• Biological Staining: Potential use as a precursor for histological stains in laboratory and diagnostic settings.

Basic Information

Product Name	Disodium 7-[[4-[[4-[[4-(Benzoylamino)Benzoyl]Amino]-o-Tolyl]Azo]Phenyl]Azo]Naphthalene-1,3-Disulphonate
CAS No.	79770-26-6
Molecular Formula	C38H26N6Na2O8S2
Molecular Weight	804.73 g/mol
Synonyms	Acid Orange 156; C.I. 26410; Disodium 7-((4-((4-((4-benzamidobenzamido)-2-methylphenyl)diazenyl)phenyl)diazenyl)naphthalene-1,3-disulfonate; 7-[[4-[[4-[[4-(Benzoylamino)Benzoyl]Amino]-2-Methylphenyl]Azo]Phenyl]Azo]-1,3-Naphthalenedisulfonic Acid Disodium Salt; Azo Dye Intermediate 79770-26-6; 1,3-Naphthalenedisulfonic acid, 7,7'-(1,2-diazenediyl)bis[4-[[4-[[(4-benzoylphenyl)amino]carbonyl]phenyl]amino]-3-methylbenzenesulfonic acid] disodium salt
EINECS	Contact for details

Quality Control

Our Disodium 7-[[4-[[4-[[4-(Benzoylamino)Benzoyl]Amino]-o-Tolyl]Azo]Phenyl]Azo]Naphthalene-1,3-Disulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, impurity profile, and physical properties are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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