Description

1,3-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, diazotized, coupled with diazotized 2-amino-4,6-dinitrophenol, diazotized 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid, diazotized 4-amino-3-methylbenzenesulfonic acid, diazotized 4-ni is a complex, multi-component azo dye intermediate of significant industrial importance. Its primary value lies in its role as a key precursor for synthesizing high-performance, polyazo dyes and pigments, particularly for demanding applications requiring specific color properties and stability. This compound is essential for manufacturers in the textile, leather, and specialty ink industries seeking to produce deep, vibrant colors with good fastness properties. The precise coupling of multiple diazotized components allows for fine-tuning of the final dye's hue and technical characteristics.

Application

• Primary Intermediate for Polyazo Dyes: Serves as the core building block for manufacturing complex black, brown, navy blue, and green azo dyes with enhanced color depth and fastness.
• Textile Dyeing and Printing: Used in the production of dyes for coloring natural and synthetic fibers, including cotton, wool, and nylon, where wash and light fastness are critical.
• Leather Finishing: A key component in dyes for leather processing, providing rich, uniform coloration for footwear, apparel, and upholstery.
• Specialty Inks: Employed in the synthesis of pigments for high-quality printing inks, including those for packaging and security applications.
• Paper Coloring: Can be used in the manufacture of dyes for specialty paper products requiring specific color tones.
• Research & Development: Utilized in chemical R&D for developing new dye structures and studying azo coupling reactions and color chemistry.

Basic Information

Product Name	1,3-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, diazotized, coupled with diazotized 2-amino-4,6-dinitrophenol, diazotized 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid, diazotized 4-amino-3-methylbenzenesulfonic acid, diazotized 4-ni
CAS No.	72480-09-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Azoic Diazo Component; Polyazo dye intermediate; Diazotized coupled naphthalenedisulfonic acid derivative; 4-Amino-5-hydroxy-1,3-naphthalenedisulfonic acid, diazotized, coupled product; Azo dye coupling component; CAS 72480-09-2; Complex azo intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and performance reliability for your synthesis processes. Quality is verified through analytical methods including HPLC for purity and composition analysis, spectrophotometry for color value assessment, and standard chemical identification tests. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each 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). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, containers should be opaque or stored in darkness. Isolate from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark colored powder or paste
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90% (or as per grade)
Moisture Content	Max. 5.0%
Ash Content	Max. 1.0%
Solubility	Soluble in water (test)

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