Description

Tetrasodium 3,3'-[Iminobis[[4-Hydroxy-5-[[4-[(4-Nitro-2-Sulphonatophenyl)Amino]Phenyl]Azo]-2,1-Phenylene]Azo-4,1-Phenyleneimino]]Bis[6-Nitrobenzenesulphonate] is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex, multi-functional structure provides excellent chromophoric properties and reactivity, making it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical sectors seeking to produce vivid, stable colors with specific technical characteristics.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-quality reactive dyes for cotton, wool, and nylon fibers, offering excellent wash and light fastness.
• Pigment Manufacturing: Used in the production of high-performance organic pigments for inks, plastics, and coatings, providing intense color strength and durability.
• Specialty Chemical Synthesis: Serves as a versatile intermediate for creating complex chromophores used in research and advanced material applications.
• Textile Industry: Enables the formulation of dyes for technical textiles requiring specific properties like UV resistance or chemical stability.
• Analytical Chemistry: May be employed as a standard or reagent in colorimetric analysis and diagnostic applications due to its defined structure.

Basic Information

Item	Details
Product Name	Tetrasodium 3,3'-[Iminobis[[4-Hydroxy-5-[[4-[(4-Nitro-2-Sulphonatophenyl)Amino]Phenyl]Azo]-2,1-Phenylene]Azo-4,1-Phenyleneimino]]Bis[6-Nitrobenzenesulphonate]
CAS No.	94158-42-6
Molecular Formula	C62H36N14Na4O26S6
Molecular Weight	~1680.2 g/mol (Contact for exact details)
Synonyms	Reactive Black 5 Intermediate; Tetrasodium Salt of C.I. Reactive Black 5 precursor; Azo Dye Intermediate 94158-42-6; 3,3'-[Iminobis[(4-hydroxy-5-[[4-[(4-nitro-2-sulfophenyl)amino]phenyl]azo]-2,1-phenylene)azo-4,1-phenyleneimino]]bis(6-nitrobenzenesulfonic acid) tetrasodium salt; C.I. 20505 intermediate; Polyazo dye intermediate; Sulfonated azo dye precursor
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. Quality is verified through comprehensive analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

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

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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