Description

1,5-Naphthalenedisulfonic acid, 2-8-amino-7-5-4-4-2-4-3-1-amino-7-(1,5-disulfo-2-naphthalenyl)azo-8-hydroxy-3,6-disulfo-2-naphthalenylazo-4-sulfophenylamino-6-chloro-1,3,5-triazin-2-ylaminoethyl-1-piperazinyl-6-chloro-1,3,5-triazin-2-ylamino-2-sulfophenyl is a high-purity, complex polyfunctional azo dye intermediate. This compound is engineered for superior color strength and binding affinity, making it a critical component in the synthesis of specialized reactive and direct dyes. It is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, wash-fast colors.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-performance reactive dyes used in cotton and cellulose fiber dyeing.
• Direct Dye Production: Used in the manufacture of direct dyes for paper, leather, and textile applications requiring deep, penetrating colors.
• Specialty Ink Formulations: A critical component in producing high-quality inks for digital textile printing and security printing.
• Functional Dye Synthesis: Serves as a precursor for dyes used in optical data storage, liquid crystal displays (LCDs), and other advanced materials.
• Research & Development: Used in academic and industrial R&D for developing novel chromophores and colorants with specific light-absorption properties.

Basic Information

Product Name	1,5-Naphthalenedisulfonic acid, 2-8-amino-7-5-4-4-2-4-3-1-amino-7-(1,5-disulfo-2-naphthalenyl)azo-8-hydroxy-3,6-disulfo-2-naphthalenylazo-4-sulfophenylamino-6-chloro-1,3,5-triazin-2-ylaminoethyl-1-piperazinyl-6-chloro-1,3,5-triazin-2-ylamino-2-sulfophenyl
CAS No.	216972-32-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Black 5 Intermediate; Polyazo dye intermediate based on naphthalene and triazine; Reactive Dye Intermediate 216972-32-6; 1,5-Naphthalenedisulfonic acid derivative azo dye; Amino-substituted naphthalene trisulfonic acid azo compound; Chlorotriazinyl amino naphthalene sulfonic acid dye; Complex polyfunctional disazo dye intermediate; Textile dye precursor CAS 216972-32-6
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Quality is verified through modern analytical techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong oxidizing agents. The material is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Ash Content	Max. 1.0%
Water Solubility	Completely soluble

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