Description

Tetrasodium 2-[[4-[[4-[[6-[(4-aminobenzoyl)amino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]-2,5-dimethoxyphenyl]azo]-6-sulphonato-1-naphthyl]azo]benzene-1,4-disulphonate is a high-purity, water-soluble polyazo dye intermediate of significant industrial importance. Its complex molecular structure provides excellent chromophoric properties, making it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vivid, stable colors with specific fastness properties.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-grade reactive dyes used in cotton and cellulose fiber dyeing.
• Direct Dye Production: Used in the manufacture of direct dyes for paper, leather, and textile applications requiring good wash fastness.
• Pigment Manufacturing: Serves as a precursor for creating high-performance organic pigments used in inks, plastics, and coatings.
• Specialty Ink Formulations: Employed in the production of inks for digital textile printing and other advanced printing technologies.
• Research & Development: Used in chemical R&D for developing new chromophores and studying structure-property relationships in dye chemistry.
• Analytical Chemistry: Can be utilized as a standard or reagent in chromatographic analysis and spectrophotometric studies of azo compounds.

Basic Information

Product Name	Tetrasodium 2-[[4-[[4-[[6-[(4-aminobenzoyl)amino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]-2,5-dimethoxyphenyl]azo]-6-sulphonato-1-naphthyl]azo]benzene-1,4-disulphonate
CAS No.	71033-17-5
Molecular Formula	C45H30N8Na4O19S4
Molecular Weight	~1190.0 g/mol
Synonyms	Tetrasodium 1-amino-4-[[4-[[4-[[6-[(4-aminobenzoyl)amino]-1-hydroxy-3-sulfo-2-naphthyl]azo]-2,5-dimethoxyphenyl]azo]-6-sulfo-1-naphthyl]azo]-2,5-benzenedisulfonate; C.I. Reactive Black 5 Intermediate; Polyazo dye intermediate; Tetranaphthalene azo compound; Benzenedisulfonic acid derivative; Reactive dye precursor; Tetrasodium salt of azo dye acid.
EINECS	Contact for details

Quality Control

Our production of tetrasodium 2-[[4-[[4-[[6-[(4-aminobenzoyl)amino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]-2,5-dimethoxyphenyl]azo]-6-sulphonato-1-naphthyl]azo]benzene-1,4-disulphonate adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity for demanding industrial synthesis. Each lot is analyzed against comprehensive specifications, including HPLC assay for purity and spectrophotometric identification. Certificates of Analysis (COA) detailing all test results are provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong oxidizing agents. The material is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent absorption of atmospheric moisture.

Specification

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

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