Description

[1-[[6-[[4-(Benzoylamino)phenyl]amino]-1-hydroxy-3-sodiosulfo-2-naphthalenyl]azo]-4-[(4-hydroxy-3-sodiooxycarbonylphenyl)azo]-6-sodiosulfo-2-naphthalenyloxy]acetic acid sodium salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex polyfunctional structure makes it a critical precursor for synthesizing specialized dyes and pigments with enhanced color fastness and solubility properties. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to develop high-performance colorants.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton, wool, and nylon fibers, providing excellent wash and light fastness.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for automotive paints, industrial coatings, and plastics requiring vibrant, stable colors.
• Inkjet Ink Formulations: Serves as a precursor for dyes used in high-resolution digital printing inks, contributing to color intensity and substrate compatibility.
• Functional Dye Synthesis: Employed in research and production of functional dyes for non-textile applications, including optical data storage and liquid crystal displays (LCDs).
• Laboratory Reagent: Used as a standard or intermediate in chemical research and analytical method development for dye chemistry.

Basic Information

Item	Details
Product Name	[1-[[6-[[4-(Benzoylamino)phenyl]amino]-1-hydroxy-3-sodiosulfo-2-naphthalenyl]azo]-4-[(4-hydroxy-3-sodiooxycarbonylphenyl)azo]-6-sodiosulfo-2-naphthalenyloxy]acetic acid sodium salt
CAS No.	5905-21-5
Molecular Formula	C42H28N6Na4O15S2
Molecular Weight	1046.78 g/mol
Synonyms	Acid Black 210; C.I. 300310; 1-[[6-[[4-(Benzoylamino)phenyl]amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-4-[(4-hydroxy-3-carboxyphenyl)azo]-6-sulfo-2-naphthalenyloxyacetic acid tetrasodium salt; Reactive Black 5 related intermediate; Tetrasodium 1-[[6-[(4-benzamidophenyl)amino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]-4-[(4-hydroxy-3-carboxylatophenyl)azo]-6-sulphonato-2-naphthyloxyacetate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems. Every batch is analyzed using modern chromatographic and spectroscopic techniques to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to support your quality assurance protocols.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product performance and handling.

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.