Description

2-Naphthalenesulfonic acid, 6-amino-3-[[4-[[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-, diazotized, coupled with 2,4-diaminobenzenesulfonic acid and m-phenylenediamine, sodium salts is a complex, high-purity azo dye intermediate of significant industrial importance. This compound is valued for its role in synthesizing high-performance dyes and pigments with excellent color fastness and specific spectral properties. It is a critical raw material for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, durable colors.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of high-grade, complex azo dyes, particularly for dark shades like blacks, navies, and browns.
• Textile Dyeing: Used in the production of dyes for coloring natural and synthetic fibers, including cotton, wool, and polyamide, where wash and light fastness are critical.
• Ink Manufacturing: Essential for formulating high-performance printing inks, including those for packaging, textiles (inkjet), and security applications.
• Leather Coloring: Employed in the manufacture of dyes for the leather tanning and finishing industry.
• Paper Dyeing: Used in the production of dyes for specialty paper and board products.
• Research & Development: Serves as a precise chemical reagent in R&D laboratories for developing new chromophores and functional materials.

Basic Information

Item	Details
Product Name	2-Naphthalenesulfonic acid, 6-amino-3-[[4-[[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-, diazotized, coupled with 2,4-diaminobenzenesulfonic acid and m-phenylenediamine, sodium salts
CAS No.	90459-18-0
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Azoic Diazo Component; Diazotized Azo Dye Intermediate; Sodium salt of coupled diazo compound; Polyazo dye intermediate; 6-Amino-4-hydroxy-2-naphthalenesulfonic acid based diazo component; Reactive dye precursor; Complex sulfonated azo intermediate
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 for sensitive synthesis processes. Quality is verified through modern analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications 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, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed in a dry environment to prevent absorption of atmospheric moisture, which can affect performance and stability.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Ash Content (Sulfated)	Contact for details
Solubility (in Water)	Partially to fully soluble

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