Description

Tetrasodium 5,5'-[Ethylenebis[(3-Sulphonato-4,1-Phenylene)-Onn-Azoxy]]Bis[8-(Phenylazo)Naphthalene-2-Sulphonate] is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its role in synthesizing complex, high-performance dyes and pigments with excellent color fastness and stability. It is a critical raw material for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vivid and durable colors.

Application

This advanced chemical intermediate serves as a key building block in the production of sophisticated colorants. Its primary and related applications include:

• Textile Dye Synthesis: A crucial precursor for manufacturing reactive, direct, and acid dyes used on cotton, wool, silk, and nylon fibers.
• Inkjet and Printing Ink Production: Used in formulating high-quality inks that require bright hues and excellent lightfastness for digital and commercial printing.
• Industrial Pigment Manufacturing: Employed in the synthesis of organic pigments for plastics, paints, and specialty coatings.
• Research & Development: Serves as a standard or experimental compound in chemical research for developing new chromophores and functional dyes.
• Paper Coloring: Used in the production of dyes for high-grade paper and packaging materials.
• Leather Dyeing: Applicable in the synthesis of dyes for the leather tanning and finishing industry.

Basic Information

Item	Details
Product Name	Tetrasodium 5,5'-[Ethylenebis[(3-Sulphonato-4,1-Phenylene)-Onn-Azoxy]]Bis[8-(Phenylazo)Naphthalene-2-Sulphonate]
CAS No.	93982-66-2
Molecular Formula	C48H30N8Na4O16S4
Molecular Weight	Approx. 1180.0 g/mol
Synonyms	Acid Black 210; C.I. 300310; Tetrasodium 5,5'-[1,2-ethanediylbis[(3-sulfo-4,1-phenylene)azoxy]]bis[8-(phenylazo)-2-naphthalenesulfonate]; Ethylenebis[(3-sulphonato-4,1-phenylene)azoxy]bis[8-(phenylazo)naphthalene-2-sulphonate] tetrasodium salt; Azo Dye Intermediate 93982-66-2; Direct Black 210 (related); [Ethylenebis[(3-sulfonato-4,1-phenylene)azoxy]]bis[8-(phenylazo)naphthalene-2-sulfonate] tetrasodium salt
EINECS	Contact for details

Quality Control

Our production of Tetrasodium 5,5'-[Ethylenebis[(3-Sulphonato-4,1-Phenylene)-Onn-Azoxy]]Bis[8-(Phenylazo)Naphthalene-2-Sulphonate] adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) documenting key parameters 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 room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95.0%
Water Content (KF)	Max. 5.0%
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
Residue on Ignition	Contact for details

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