Description

2-Naphthalenesulfonic Acid, 7-Amino-4-Hydroxy-3,8-Bis[[4-[(4-Sulfophen Yl)Azo]Phenyl]Azo]-, Trisodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its role in synthesizing complex, high-performance dyes and pigments, offering excellent color strength and stability. It is primarily sought after by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant and durable colorants.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of high-grade, polyazo direct dyes and acid dyes for textiles like wool, silk, and nylon.
• Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics, providing enhanced color fastness and thermal stability.
• Specialty Chemical Synthesis: Serves as a crucial precursor in the manufacture of more complex dye molecules and functional colorants for niche applications.
• Research & Development: Employed in laboratory settings for developing new dye structures and studying azo coupling reactions.

Basic Information

Product Name	2-Naphthalenesulfonic Acid, 7-Amino-4-Hydroxy-3,8-Bis[[4-[(4-Sulfophen Yl)Azo]Phenyl]Azo]-, Trisodium Salt
CAS No.	6949-14-0
Molecular Formula	C40H24N8Na3O13S3
Molecular Weight	974.81 g/mol
Synonyms	Acid Black 210; C.I. 300310; Trisodium 7-amino-4-hydroxy-3,8-bis[4-[(4-sulfophenyl)azo]phenyl]azo]naphthalene-2-sulfonate; 7-Amino-4-hydroxy-3,8-bis[[4-[(4-sulfophenyl)azo]phenyl]azo]-2-naphthalenesulfonic acid trisodium salt; Direct Black 166; Polyazo Black Dye Intermediate; Azo Dye Intermediate 6949-14-0
EINECS	Contact for details

Quality Control

Our production of 2-Naphthalenesulfonic Acid, 7-Amino-4-Hydroxy-3,8-Bis[[4-[(4-Sulfophen Yl)Azo]Phenyl]Azo]-, Trisodium Salt adheres to stringent quality protocols to ensure batch-to-batch consistency and purity suitable for industrial synthesis. Every lot is analyzed against comprehensive specifications, including identity, assay, and impurity profile. Certificates of Analysis (COA) documenting these results are provided to guarantee product integrity and support your quality assurance 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 hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content	Max. 5.0%
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm

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