Description

Tetrasodium 2,2'-[Iminobis[(1-Hydroxy-3-Sulphonato-6,2-Naphthalenediyl)Azo-3,1-Phenyleneimino]]Bis(2-Oxoacetate) is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound matters for its role as a critical precursor in the synthesis of specialized dyes and pigments, offering excellent color strength and stability. It is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to produce high-performance colorants. Its consistent quality is essential for ensuring batch-to-batch reproducibility in final product formulations.

Application

• Textile Dye Synthesis: A key intermediate for producing reactive and direct dyes for cotton, wool, and nylon fibers.
• Inkjet Ink Formulation: Used in the manufacture of high-quality pigments for industrial and graphic arts inks.
• Specialty Coatings: Serves as a precursor for colorants used in automotive, industrial, and decorative paints.
• Paper Coloring: Employed in the production of dyes for high-grade paper and packaging materials.
• Biological Staining: Potential use as an intermediate for histological stains and diagnostic reagents.
• Functional Dye Production: A building block for dyes used in optical data storage, sensors, and liquid crystal displays (LCDs).

Basic Information

Product Name	Tetrasodium 2,2'-[Iminobis[(1-Hydroxy-3-Sulphonato-6,2-Naphthalenediyl)Azo-3,1-Phenyleneimino]]Bis(2-Oxoacetate)
CAS No.	68631-10-7
Molecular Formula	C44H24N8Na4O20S2
Molecular Weight	1128.78 g/mol
Synonyms	Acid Black 210; C.I. 300310; Tetrasodium 6,6'-[carbonylbis[imino(2-sulphonato-4,1-phenylene)azo]]bis(4-hydroxy-2-naphthalenesulphonate); Reactive Black 5 precursor; Azo dye intermediate 68631-10-7; 2,2'-[Iminobis[(1-hydroxy-3-sulphonato-6,2-naphthalenediyl)azo-3,1-phenyleneimino]]bis(2-oxoacetate) tetrasodium salt
EINECS	Contact for details

Quality Control

Our Tetrasodium 2,2'-[Iminobis[(1-Hydroxy-3-Sulphonato-6,2-Naphthalenediyl)Azo-3,1-Phenyleneimino]]Bis(2-Oxoacetate) is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure compliance with precise specifications for purity, color strength, and impurity profiles. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance and regulatory needs.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Completely soluble

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