Description

Disodium 4-Amino-3-[[4'-[(2-Amino-4-Hydroxyphenyl)Azo]-3,3'-Dimethoxy[1,1'-Biphenyl]-4-Yl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate is a high-purity, complex azo dye intermediate of significant industrial importance. This compound is valued for its ability to impart specific, vibrant color properties and its role in synthesizing advanced colorants. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries for producing high-performance dyes and pigments.

Application

• Primary Intermediate for Textile Dyes: A key building block in the synthesis of high-grade, wash-fast azo dyes for cotton, wool, and synthetic fibers.
• Specialty Ink Formulation: Used in the production of colorants for high-resolution inkjet, packaging, and security inks requiring precise color characteristics.
• Industrial Pigment Manufacturing: Serves as a precursor for creating organic pigments used in plastics, paints, and coatings.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying azo dye chemistry and photostability.
• Leather Dyeing: Utilized in the formulation of dyes for the leather tanning and finishing industry.
• Paper Coloring: Applied in the manufacture of dyes for specialty and decorative papers.

Basic Information

Product Name	Disodium 4-Amino-3-[[4'-[(2-Amino-4-Hydroxyphenyl)Azo]-3,3'-Dimethoxy[1,1'-Biphenyl]-4-Yl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate
CAS No.	93857-57-9
Molecular Formula	C40H28N8Na2O11S2
Molecular Weight	898.80 g/mol
Synonyms	Acid Black 210; C.I. 300310; Disodium 4-amino-5-hydroxy-3-[[4'-[(2-amino-4-hydroxyphenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-6-(phenylazo)naphthalene-2,7-disulfonate; 2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4'-[(2-amino-4-hydroxyphenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-5-hydroxy-6-(phenylazo)-, disodium salt; C.I. Acid Black 210; Azo dye intermediate 93857-57-9
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for color strength, and rigorous impurity profiling. A detailed Certificate of Analysis (COA) documenting identity, assay, and related substances 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). 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 or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	98 - 102% (vs. Standard)
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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