Description

7,7'-Iminobis[3-[[4-[(2,4-Diaminophenyl)Azo]-3-Sodiosulfophenyl]Azo]-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium] Salt is a high-purity, complex azo dye intermediate of significant industrial importance. This compound is valued for its ability to impart deep, stable colors and is a critical precursor in the synthesis of specialized dyes and pigments. It is primarily required by manufacturers in the textile, leather, and specialty ink industries seeking to produce high-performance colorants with specific fastness properties.

Application

• Textile Dyeing: A key intermediate for producing high-grade, wash-fast azo dyes for cotton, wool, and synthetic fibers.
• Leather Coloring: Used in the synthesis of pigments and dyes for coloring leather goods, providing excellent adhesion and color depth.
• Specialty Inks: Serves as a precursor for manufacturing colorants used in inks for packaging, security printing, and other high-performance applications.
• Paper Dyeing: Employed in the production of dyes for coloring paper products where specific color intensity and stability are required.
• Research & Development: Utilized as a standard or building block in chemical research for developing new chromophores and functional dyes.
• Pigment Manufacturing: Acts as an intermediate in the synthesis of organic pigments used in plastics, paints, and coatings.

Basic Information

Product Name	7,7'-Iminobis[3-[[4-[(2,4-Diaminophenyl)Azo]-3-Sodiosulfophenyl]Azo]-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium] Salt
CAS No.	6428-33-7
Molecular Formula	C52H34N12Na4O16S4
Molecular Weight	~1291.16 g/mol (Contact for exact weight of specific hydrate/salt form)
Synonyms	Acid Black 107; C.I. 23280; 7,7'-Iminobis[4-hydroxy-3-[(4-[(2,4-diaminophenyl)azo]-3-sulfophenyl)azo]-2-naphthalenesulfonic acid] tetrasodium salt; Direct Black 107; Tetrasodium 7,7'-iminobis[4-hydroxy-3-[(4-[(2,4-diaminophenyl)azo]-3-sulfophenyl)azo]naphthalene-2-sulfonate]; Azo Black 107; C.I. Acid Black 107
EINECS	Contact for details

Quality Control

Our 7,7'-Iminobis[3-[[4-[(2,4-Diaminophenyl)Azo]-3-Sodiosulfophenyl]Azo]-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium] Salt is produced under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, identity, and performance. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical characteristics are provided and 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 room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and handling properties.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm
Solubility (in Water)	Partially to fully soluble (Contact for details)

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