Description

7-Naphthalenedisulfonic Acid, 4-Amino-6-[[4-[[[4-[(2,4-Dihydroxyphenyl)Azo] Phenyl] Amino] Sulfonyl]2 is a specialized, high-purity azo dye intermediate with a complex, multi-functional structure. This compound is critical for synthesizing high-performance dyes and pigments, offering precise color characteristics and stability. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries seeking reliable intermediates for advanced colorant production.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of complex, high-value azo dyes for textiles and leather.
• Specialty Pigment Manufacturing: Used in the production of pigments for inks, coatings, and plastics requiring specific color fastness and durability.
• Research & Development: Employed in chemical R&D for developing new chromophores and functional dyes with novel optical properties.
• Analytical Chemistry Reagent: Can be utilized as a staining agent or a complexometric indicator in specific laboratory analyses.

Basic Information

Product Name	7-Naphthalenedisulfonic Acid, 4-Amino-6-[[4-[[[4-[(2,4-Dihydroxyphenyl)Azo] Phenyl] Amino] Sulfonyl]2
CAS No.	73309-49-6
Molecular Formula	C28H21N5O10S3
Molecular Weight	707.68 g/mol
Synonyms	Acid Black 210; C.I. 300310; 4-Amino-6-[[4-[[[4-[(2,4-dihydroxyphenyl)azo]phenyl]amino]sulfonyl]phenyl]azo]-5-hydroxy-7-(phenylamino)-1,3-naphthalenedisulfonic acid; 7-Naphthalenedisulfonic acid, 4-amino-6-[[4-[[[4-[(2,4-dihydroxyphenyl)azo]phenyl]amino]sulfonyl]phenyl]azo]-5-hydroxy-7-(phenylamino)-; 4-Amino-6-[[4-[[[4-[(2,4-dihydroxyphenyl)azo]phenyl]amino]sulfonyl]phenyl]azo]-5-hydroxy-7-(phenylamino)-1,3-naphthalenedisulfonic acid; 1,3-Naphthalenedisulfonic acid, 4-amino-6-[[4-[[[4-[(2,4-dihydroxyphenyl)azo]phenyl]amino]sulfonyl]phenyl]azo]-5-hydroxy-7-(phenylamino)-
EINECS	Contact for details

Quality Control

Our production of 7-Naphthalenedisulfonic Acid, 4-Amino-6-[[4-[[[4-[(2,4-Dihydroxyphenyl)Azo] Phenyl] Amino] Sulfonyl]2 adheres to a strict quality management system to ensure batch-to-batch consistency and purity. Each lot is analyzed against stringent in-house specifications using advanced techniques like HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. Due to its complex organic structure, prolonged exposure to elevated temperatures or humidity should be avoided.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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