Description

2-Hydroxy-5-[[4-[[4-[(1-hydroxy-6-phenylamino-3-sodiosulfo-2-naphthalenyl)azo]-7-sodiosulfo-1-naphthalenyl]azo]-6-sodiosulfo-1-naphthalenyl]azo]-3-sodiosulfobenzoic acid sodium salt is a high-purity, polyazo dye intermediate of significant industrial importance. This compound is valued for its ability to impart deep, vibrant colors and its compatibility with various substrates. It is primarily sought after by manufacturers in the textile, ink, and specialty coatings industries for the production of high-performance dyes and pigments. Our supply ensures consistent quality and reliable performance for critical formulation processes.

Application

• Primary Intermediate for Polyazo Dyes: A key building block in the synthesis of complex, high-molecular-weight azo dyes, particularly for textile fibers like cotton, wool, and nylon.
• Textile Dyeing and Printing: Used to manufacture dyes that offer excellent color fastness, brightness, and wash resistance for fabrics.
• Inkjet and Printing Inks: Serves as a colorant precursor in the formulation of inks for digital printing and industrial marking, providing stable and intense coloration.
• Leather and Paper Coloring: Employed in the production of dyes for coloring leather goods and specialty papers.
• Research & Development: Utilized in chemical research for developing novel chromophores and studying dye-sensitized systems.
• Specialty Coatings and Paints: Acts as an intermediate for pigments used in coatings that require specific color properties and durability.

Basic Information

Item	Details
Product Name	2-Hydroxy-5-[[4-[[4-[(1-hydroxy-6-phenylamino-3-sodiosulfo-2-naphthalenyl)azo]-7-sodiosulfo-1-naphthalenyl]azo]-6-sodiosulfo-1-naphthalenyl]azo]-3-sodiosulfobenzoic acid sodium salt
CAS No.	6428-61-1
Molecular Formula	C47H28N9Na5O19S5
Molecular Weight	~1387.0 g/mol (Contact for exact details)
Synonyms	Acid Black 210; C.I. 300317; Polyazo dye intermediate; Sodium 2-hydroxy-5-[[4-[[4-[(1-hydroxy-6-phenylamino-3-sulphonato-2-naphthyl)azo]-7-sulphonato-1-naphthyl]azo]-6-sulphonato-1-naphthyl]azo]-3-sulphobenzoate; Benzoic acid, 2-hydroxy-5-[[4-[[4-[(1-hydroxy-6-phenylamino-3-sulfo-2-naphthalenyl)azo]-7-sulfo-1-naphthalenyl]azo]-6-sulfo-1-naphthalenyl]azo]-3-sulfo-, sodium salt (1:5)
EINECS	Contact for details

Quality Control

Our production of 2-Hydroxy-5-[[4-[[4-[(1-hydroxy-6-phenylamino-3-sodiosulfo-2-naphthalenyl)azo]-7-sodiosulfo-1-naphthalenyl]azo]-6-sodiosulfo-1-naphthalenyl]azo]-3-sodiosulfobenzoic acid sodium salt adheres to stringent quality protocols to ensure batch-to-batch consistency and purity for industrial applications. Quality is verified through advanced analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. Certificates of Analysis (COA) detailing purity, impurity profile, and physical specifications are provided with every shipment to support your quality assurance and regulatory needs.

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 material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
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.