Description

4-Amino-5-Hydroxy-6-[[4'-[(2-Hydroxy-3,6-Disulfo-1-Naphthalenyl)Azo]-3,3'-Dimethoxy[1,1'-Biphenyl]-4-Yl]Azo]-1,3-Naphthalenedisulfonic Acid Tetrasodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex polyazo structure, featuring multiple sulfonate groups, provides excellent water solubility and strong chromophoric properties, making it a critical precursor for specialized dyes and pigments. This compound is primarily sought by manufacturers in the textile, ink, and specialty chemical sectors for producing high-value, color-fast dyes.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-performance reactive dyes for cotton and other cellulosic fibers, valued for their brilliant shades and wash-fastness.
• Specialty Ink Production: Used in formulating inks for jet printing, security inks, and other applications requiring specific color properties and stability.
• Functional Dye Synthesis: Serves as a precursor for dyes used in biological staining, pH indicators, and other functional colorants due to its complex, tunable structure.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying azo dye chemistry and photophysical properties.

Basic Information

Item	Detail
Product Name	4-Amino-5-Hydroxy-6-[[4'-[(2-Hydroxy-3,6-Disulfo-1-Naphthalenyl)Azo]-3,3'-Dimethoxy[1,1'-Biphenyl]-4-Yl]Azo]-1,3-Naphthalenedisulfonic Acid Tetrasodium Salt
CAS No.	68084-21-9
Molecular Formula	C40H24N6Na4O18S4
Molecular Weight	1084.86 g/mol (approx.)
Synonyms	Acid Black 210; C.I. 300310; Tetrasodium 4-amino-5-hydroxy-6-[[4'-[(2-hydroxy-3,6-disulfo-1-naphthyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]naphthalene-1,3-disulfonate; 4-Amino-5-hydroxy-6-({4'-[(2-hydroxy-3,6-disulfonaphthalen-1-yl)diazenyl]-3,3'-dimethoxybiphenyl-4-yl}diazenyl)naphthalene-1,3-disulfonic acid tetrasodium salt; Azo Dye Intermediate 68084-21-9
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 purity. Quality is verified through comprehensive analytical methods including HPLC, UV-Vis spectroscopy, and titration. 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, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is 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)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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