Description

Tetrasodium 3-[[4-[[[[4-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo]-3-sulphonatophenyl]amino]carbonyl]amino]-2-sulphonatophenyl]azo]-4-hydroxy-7-(phenylamino)naphthalene-2-sulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex polyfunctional structure provides excellent chromophoric properties and binding affinity, making it a critical precursor for the synthesis of specialized dyes and pigments. This compound is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to produce high-performance colorants with specific fastness and solubility profiles.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-grade reactive dyes for cotton, wool, and nylon textiles.
• Specialty Ink Manufacturing: Used in the production of pigments for inks requiring specific solubility, color strength, and stability, such as those for digital textile printing.
• Industrial Coatings: Serves as a chromophore component in the formulation of specialized industrial coatings and paints.
• Research & Development: Employed in chemical R&D for developing novel dyestuffs, colorimetric sensors, and functional materials.
• Paper Coloring: Potential use in the manufacture of dyes for high-quality paper and packaging products.
• Leather Dyeing: Applicable in the synthesis of dyes used for coloring leather goods.

Basic Information

Item	Details
Product Name	Tetrasodium 3-[[4-[[[[4-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo]-3-sulphonatophenyl]amino]carbonyl]amino]-2-sulphonatophenyl]azo]-4-hydroxy-7-(phenylamino)naphthalene-2-sulphonate
CAS No.	6771-82-0
Molecular Formula	C39H24N8Na4O16S4
Molecular Weight	1084.87 g/mol (approx.)
Synonyms	Acid Black 210; C.I. 300310; Tetrasodium 8-Amino-2-[[4-[[4-[[4-[(7-Amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]phenyl]amino]carbonyl]amino]-3-sulfophenyl]azo]-1-hydroxy-3,6-naphthalenedisulfonate; Reactive Dye Intermediate; Azo Dye Intermediate CAS 6771-82-0
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and purity for downstream synthesis. Quality is verified through analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A comprehensive 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, and well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect purity and handling properties.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	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.