Description

4-Amino-3-[(2,5-Dichlorophenyl)Azo]-5-Hydroxy-6-[[4'-[(4-Hydroxyphenyl)Azo]-1,1'-Biphenyl-4-Yl]Azo]-2,7-Naphthalenedisulfonic Acid Disodium Salt is a high-purity, polyazo dye intermediate known for its complex molecular structure and excellent chromophoric properties. This compound is critical for synthesizing high-performance dyes and pigments that require superior color strength, lightfastness, and chemical stability. It is primarily sought after by manufacturers in the specialty dyes, textile coloration, and advanced material coating industries for developing products with specific and demanding colorimetric profiles.

Application

• Primary Intermediate for Polyazo Dyes: A key building block in the synthesis of high-grade, complex azo dyes for textiles, leather, and paper.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics that require enhanced durability and color purity.
• Functional Dye Synthesis: Serves as a precursor for dyes used in non-textile applications, such as lasers, optical data storage, and liquid crystal displays (LCDs).
• Research & Development: Employed in chemical R&D for studying azo coupling reactions and developing novel chromophores with specific absorption characteristics.
• Analytical Chemistry Reagent: Can be utilized as a staining agent or a complexometric indicator in certain analytical procedures.

Basic Information

Product Name	4-Amino-3-[(2,5-Dichlorophenyl)Azo]-5-Hydroxy-6-[[4'-[(4-Hydroxyphenyl)Azo]-1,1'-Biphenyl-4-Yl]Azo]-2,7-Naphthalenedisulfonic Acid Disodium Salt
CAS No.	6486-55-1
Molecular Formula	C40H24Cl2N8O10S2•2Na
Molecular Weight	933.68 g/mol
Synonyms	Acid Black 210; C.I. 300310; 2,7-Naphthalenedisulfonic acid, 4-amino-3-[(2,5-dichlorophenyl)azo]-5-hydroxy-6-[[4'-[(4-hydroxyphenyl)azo][1,1'-biphenyl]-4-yl]azo]-, disodium salt; Disodium 4-amino-3-[(2,5-dichlorophenyl)azo]-5-hydroxy-6-[[4'-[(4-hydroxyphenyl)azo][1,1'-biphenyl]-4-yl]azo]naphthalene-2,7-disulphonate; Polyazo dye intermediate 6486-55-1
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting key parameters such as assay, impurity profile, and physical characteristics to guarantee consistency and reliability for your synthesis processes.

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 material is light-sensitive (store away from light) and hygroscopic (moisture-sensitive); ensure containers are kept sealed to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%

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