Description

Trisodium 6-Amino-3-[[4-[[4-[(7-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]Phenyl]Amino]-3-Sulphonatophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex, multi-sulphonated structure provides excellent substantivity and chromophore properties, making it a critical precursor for synthesizing specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical sectors seeking to produce vivid, stable colors with specific application performance.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-grade reactive dyes for cotton, wool, and nylon, offering brilliant shades and excellent wash-fastness.
• Specialty Pigment Manufacturing: Used in the production of high-performance organic pigments for inks, coatings, and plastics, where color strength and stability are paramount.
• Textile Dyeing and Printing: Serves as a crucial component in formulations for textile dyeing and printing processes, ensuring deep, uniform color penetration.
• Biological Staining Agent Precursor: Potential use in the synthesis of specialized staining agents for histological and cytological applications in life sciences.
• Research & Development: Employed in chemical R&D for developing new chromophores, functional dyes, and materials with specific optical properties.
• Functional Dye Synthesis: Intermediate for creating dyes used in sensitizers, optical data storage, and other high-tech functional material applications.

Basic Information

Product Name	Trisodium 6-Amino-3-[[4-[[4-[(7-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]Phenyl]Amino]-3-Sulphonatophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	67969-92-0
Molecular Formula	C32H20N6Na3O13S3
Molecular Weight	894.71 g/mol
Synonyms	6-Amino-3-[[4-[[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-2-naphthalenesulfonic acid trisodium salt; C.I. Reactive Black 5 intermediate; Trisodium 6-amino-4-hydroxy-3-[[4-[[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]phenyl]amino]-3-sulfophenyl]azo]-2-naphthalenesulfonate; Reactive Dye Intermediate 67969-92-0; Azo Dye Intermediate (Multi-sulphonated); CAS 67969-92-0
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 high chemical purity. Quality is verified through comprehensive analytical methods including HPLC, UV-Vis spectroscopy, and titration. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory compliance 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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