Description

2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, diazotized, coupled with diazotized 4-amino-1-naphthalenesulfonic acid, diazotized 4-nitrobenzenamine and resorcinol is a complex, multi-component azo dye intermediate. This compound matters for its role in synthesizing high-value, specialized dyes and pigments with specific color and fastness properties. Industrial manufacturers in the textile, leather, and specialty chemical sectors require this intermediate to produce vibrant and durable colorants.

Application

• Primary intermediate for the synthesis of complex azo dyes and pigments used in textile dyeing and printing.
• Key component in manufacturing leather dyes requiring good penetration and color fastness.
• Used in the production of specialty inks, including those for security printing and high-performance applications.
• Potential precursor for colorants in plastics and polymers to achieve specific shades.
• Research and development of novel functional dyes for non-textile applications, such as in optics or electronics.
• Starting material for biological stains and histological dyes used in laboratory settings.

Basic Information

Product Name	2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, diazotized, coupled with diazotized 4-amino-1-naphthalenesulfonic acid, diazotized 4-nitrobenzenamine and resorcinol
CAS No.	100298-64-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Azoic Coupling Component; Azo dye intermediate derived from 2,7-naphthalenedisulfonic acid; Reaction product of diazotized 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid with diazotized 4-amino-1-naphthalenesulfonic acid, diazotized 4-nitroaniline, and resorcinol; Multi-azo coupling component; Complex naphthalene sulfonic acid azo compound
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. Quality is verified through analytical methods including HPLC, spectrophotometry, and titration to confirm identity, purity, and coupling strength. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each 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. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95% (or as per grade)
Moisture Content	Max. 2.0%
Ash Content	Max. 0.5%
Solubility	Soluble in alkaline aqueous solutions

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