Description

5,5'-[[3,7-Bis(Sodiosulfo)Naphthalene-1,5-Diyl]Bis[Azo(4,6-Diamino-3,1-Phenylene)Azo[1,1'-Biphenyl]-4',4-Diylazo]]Bis[2-Hydroxybenzoic Acid Sodium] Salt is a high-purity, complex azo dye intermediate essential for producing vibrant and stable colorants. Its multi-azo and sulfonated structure provides excellent water solubility and strong chromophoric properties, making it a critical component for advanced dye synthesis. This compound is primarily required by manufacturers in the specialty chemicals, textile dye, and high-performance pigment industries seeking reliable and consistent raw materials for their production processes.

Application

• Primary Intermediate for Reactive Dyes: Serves as a key building block in the synthesis of high-quality reactive dyes for cotton and other cellulosic fibers.
• Direct Dye Production: Used in the manufacture of direct dyes, offering good wash-fastness and bright shades for textiles and paper.
• Acid Dye Synthesis: An important precursor for creating acid dyes used on wool, silk, and nylon, providing strong color value.
• Food, Drug, and Cosmetic (FD&C) Colorants: Potential use as an intermediate in the production of certified color additives, subject to stringent purification and regulatory compliance.
• Liquid Crystal Dyes (LCDs): Can be utilized in the development of dyes for electronic displays due to its stable conjugated system.
• Biological Staining: May be employed in the synthesis of histological stains for microscopy and diagnostic applications.
• Inkjet Printing Inks: Used in the formulation of high-performance inks requiring excellent color strength and solubility.
• Research & Development: Serves as a standard or experimental compound in chemical research for developing new chromophores and functional materials.

Basic Information

Product Name	5,5'-[[3,7-Bis(Sodiosulfo)Naphthalene-1,5-Diyl]Bis[Azo(4,6-Diamino-3,1-Phenylene)Azo[1,1'-Biphenyl]-4',4-Diylazo]]Bis[2-Hydroxybenzoic Acid Sodium] Salt
CAS No.	6409-89-8
Molecular Formula	C68H44N12Na6O20S4
Molecular Weight	1687.34 g/mol (Disodium Salt Form)
Synonyms	Acid Black 210; C.I. 300310; 5,5'-[[3,7-Bis(sodiosulfo)-1,5-naphthalenediyl]bis[azo(4,6-diamino-1,3-phenylene)azo[1,1'-biphenyl]-4',4-diylazo]]bis[2-hydroxybenzoic acid] sodium salt; Benzoic acid, 2-hydroxy-5-[[4'-[[4,6-diamino-3-[[7-[(4,6-diamino-3-[[4'-[2-carboxy-5-[(7-sodiosulfo-4-[(4-sulfophenyl)azo]-1-naphthyl)azo]phenyl]amino]-6-sodiosulfo-1-naphthyl]azo]phenyl]azo]-1-naphthyl]azo]-1,1'-biphenyl-4-yl]azo]-, sodium salt; Direct Black 166; Azo Black SH; Sulphonated Azo Dye Intermediate 6409-89-8
EINECS	Contact for details

Quality Control

Our 5,5'-[[3,7-Bis(Sodiosulfo)Naphthalene-1,5-Diyl]Bis[Azo(4,6-Diamino-3,1-Phenylene)Azo[1,1'-Biphenyl]-4',4-Diylazo]]Bis[2-Hydroxybenzoic Acid Sodium] Salt is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical properties. Our production adheres to ISO 9001 standards, and we can support compliance documentation for REACH and other global regulatory frameworks as required.

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 sealed when not in use to prevent absorption of atmospheric moisture, which can affect product quality and handling properties. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	15.0% - 25.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble
pH (1% Solution)	6.0 - 8.0

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