Description

4-Amino-3-[[4'-[[2-amino-4-[(3-butoxy-2-hydroxypropyl)amino]phenyl]azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-5-hydroxy-6-(phenylazo)-2,7-naphthalenedisulfonic acid disodium salt is a high-purity, complex azo dye intermediate of significant industrial importance. Its value lies in its ability to impart specific, vibrant color properties and excellent fastness characteristics in demanding applications. This compound is essential for manufacturers of high-performance dyes and pigments targeting textiles, inks, and specialty coatings who require consistent quality and reliable supply.

Application

This specialized azo dye intermediate is engineered for high-performance coloring applications where durability and specific hue are critical. Its primary and related uses include:

• Textile Dyeing: A key precursor for synthesizing reactive and direct dyes for cotton, wool, and nylon, offering excellent wash and light fastness.
• Ink Manufacturing: Used in the production of high-quality pigments for inks, including those for packaging, security printing, and digital textiles.
• Industrial Coatings: Serves as an intermediate for pigments used in coatings for plastics, automotive finishes, and other industrial materials requiring color stability.
• Leather Coloring: Employed in the synthesis of dyes for the leather industry, providing deep, uniform coloration.
• Paper Coloring: Used in the manufacture of dyes for specialty paper products where color consistency is paramount.
• Research & Development: Acts as a critical building block in chemical R&D for developing novel chromophores and functional dyes.

Basic Information

Product Name	4-Amino-3-[[4'-[[2-amino-4-[(3-butoxy-2-hydroxypropyl)amino]phenyl]azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-5-hydroxy-6-(phenylazo)-2,7-naphthalenedisulfonic acid disodium salt
CAS No.	103580-64-9
Molecular Formula	C49H48N10Na2O11S2
Molecular Weight	1054.06 g/mol (approx.)
Synonyms	Reactive Black 5 Precursor; C.I. Reactive Black 5 Intermediate; Disodium 4-amino-6-[4-[4-[2-(4-aminophenoxy)ethoxy]phenylazo]-7-sulfo-1-naphthylazo]-5-hydroxy-2,7-naphthalenedisulfonate (related structural analog); Azo Dye Intermediate 103580-64-9; Complex Azo Dye Salt; 2,7-Naphthalenedisulfonic acid derivative; Textile Dye Intermediate; Multifunctional Azo Compound
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 your synthesis processes. Quality is verified through advanced analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles 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). This compound is hygroscopic (moisture-sensitive); ensure containers are kept sealed to prevent absorption of atmospheric moisture, which can affect stability and handling properties.

Specification

Item	Specification
Appearance	Dark powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content (KF)	≤ 5.0%
Solubility (in Water)	Soluble
Heavy Metals (as Pb)	≤ 20 ppm

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