Description

Trisodium 8-[[4-[(4-Acetamidophenyl)Azo]-7-Sulphonatonaphthyl]Azo]-5-[(2-Hydroxy-6-Sulphonatonaphthyl)Azo]Naphthalene-2-Sulphonate is a high-purity, multi-sulfonated azo dye intermediate of significant industrial importance. Its complex polyazo structure and multiple sulfonate groups provide excellent water solubility and strong affinity for various substrates, making it a critical precursor for high-performance dyes. This compound is essential for manufacturers in the textile, ink, and specialty chemical sectors seeking to produce vivid, wash-fast, and light-stable colorants.

Application

• Primary Intermediate for Reactive Dyes: Synthesis of high-value reactive dyes for cotton, wool, and nylon, offering brilliant shades and superior fastness properties.
• Direct Dye Manufacturing: Production of direct dyes for paper and cellulose-based materials, leveraging its strong substantivity.
• Acid Dye Precursor: Used in formulating acid dyes for silk, leather, and polyamide fibers.
• Specialty Ink Pigments: Key component in the synthesis of pigments for high-quality inks used in packaging and digital printing.
• Functional Dye Synthesis: Intermediate for dyes used in biological staining, optical data storage, and other high-tech applications.
• Research & Development: Serves as a valuable building block in academic and industrial R&D for novel chromophores and functional materials.

Basic Information

Item	Details
Product Name	Trisodium 8-[[4-[(4-Acetamidophenyl)Azo]-7-Sulphonatonaphthyl]Azo]-5-[(2-Hydroxy-6-Sulphonatonaphthyl)Azo]Naphthalene-2-Sulphonate
CAS No.	67906-46-1
Molecular Formula	C44H26N6Na3O13S3
Molecular Weight	~1020.86 g/mol (Contact for details)
Synonyms	Trisodium 1-amino-8-[[4-[(4-acetamidophenyl)azo]-7-sulphonato-1-naphthyl]azo]-5-[(2-hydroxy-6-sulphonato-1-naphthyl)azo]naphthalene-2-sulphonate; C.I. Reactive Black 5 Intermediate; Polyazo dye intermediate; Reactive dye precursor; Multi-sulfonated azo compound; CAS 67906-46-1; Trisulfonated azo dye intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management protocols. Every batch is analyzed to ensure consistent chemical identity, purity, and performance characteristics. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing key parameters such as assay, impurity profile, and solubility. We support our global clients with documentation to meet their specific regulatory and 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). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect purity and handling properties.

Specification

Item	Specification
Appearance	Dark blue to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Solubility (in Water)	Clear solution at 1% w/v
Heavy Metals (as Pb)	≤ 20 ppm
Sulfated Ash	Contact for details

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