Description

4-[[2,4-Diamino-5-[[3-[[4-[[2,4-diamino-5-[(4-sodiosulfo-1-naphthalenyl)azo]phenyl]azo]-1-naphthalenyl]azo]-2-methyl-5-sodiosulfophenyl]azo]phenyl]azo]naphthalene-1-sulfonic acid sodium salt is a high-purity, polyazo dye intermediate of significant industrial importance. Its complex, multi-azo structure is engineered to deliver exceptional color strength and specific hue properties in demanding applications. This compound is primarily sought by manufacturers in the specialty dyes and pigments sector, where it serves as a critical building block for producing high-performance colorants.

Application

• Primary Intermediate for Polyazo Dyes: Serves as a key precursor in the synthesis of complex, high molecular weight azo dyes, particularly for dark shades like blacks, navies, and deep browns.
• Textile Dyeing: Used in the manufacturing of dyes for coloring natural and synthetic fibers, especially where high wash and light fastness are required.
• Leather Coloring: Employed in the production of pigments and dyes for the leather tanning and finishing industry.
• Ink Formulation: Acts as a colorant component in the manufacture of specialty printing inks, including inks for packaging and security applications.
• Paper Dyeing: Utilized in the production of dyes for coloring paper and paperboard products.
• Research & Development: Serves as a valuable reference standard and starting material in chemical R&D for novel chromophore systems.

Basic Information

Item	Details
Product Name	4-[[2,4-Diamino-5-[[3-[[4-[[2,4-diamino-5-[(4-sodiosulfo-1-naphthalenyl)azo]phenyl]azo]-1-naphthalenyl]azo]-2-methyl-5-sodiosulfophenyl]azo]phenyl]azo]naphthalene-1-sulfonic acid sodium salt
CAS No.	6409-88-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. 26360; Direct Black 19 (component); Polyazo black intermediate; Sodium 4-[[2,4-diamino-5-[[3-[[4-[[2,4-diamino-5-[(4-sulfo-1-naphthyl)azo]phenyl]azo]-1-naphthyl]azo]-2-methyl-5-sulfophenyl]azo]phenyl]azo]-1-naphthalenesulfonate; Azo dye intermediate 6409-88-7; Tetrakisazo dye intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Every lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation. A detailed Certificate of Analysis (COA) documenting all relevant specifications is provided with each shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is kept sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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