Description

4-Amino-5-Hydroxy-3-[[4-[[[4-[(4-Hydroxy-8-Sulpho-1-Naphthyl)Azo]Phenyl]Amino]Carbonyl]Phenyl]Azo]-6-(Phenylazo)Naphthalene-2,7-Disulphonic Acid is a complex, high-molecular-weight azo dye intermediate characterized by its multiple sulphonic acid groups, which impart excellent water solubility. This compound matters as a critical precursor for synthesizing high-performance, colorfast dyes and pigments, particularly in applications demanding vibrant shades and strong substrate affinity. It is primarily needed by manufacturers in the textile, leather, and specialty ink industries for producing advanced coloring agents.

Application

• Primary Intermediate for Reactive Dyes: Synthesis of high-value reactive dyes for cotton, wool, and other cellulosic fibers, providing excellent wash and light fastness.
• Leather Dyeing: Production of dyes for the leather tanning industry, offering deep, uniform coloration.
• Inkjet and Specialty Inks: Manufacturing of colorants for high-performance inks used in digital textile printing and packaging.
• Paper Coloring: Used in the production of dyes for high-quality paper and board.
• Research & Development: Serves as a key building block in chemical R&D for developing novel chromophores and functional dyes.
• Functional Dye Synthesis: Potential use in creating dyes for non-textile applications, such as in optical sensors or laser materials.

Basic Information

Product Name	4-Amino-5-Hydroxy-3-[[4-[[[4-[(4-Hydroxy-8-Sulpho-1-Naphthyl)Azo]Phenyl]Amino]Carbonyl]Phenyl]Azo]-6-(Phenylazo)Naphthalene-2,7-Disulphonic Acid
CAS No.	83863-54-1
Molecular Formula	C45H30N8O13S3
Molecular Weight	1011.0 g/mol (approx.)
Synonyms	Acid Black 210; C.I. 300310; 4-Amino-5-hydroxy-3-((4-((4-((4-hydroxy-8-sulfo-1-naphthyl)azo)phenyl)carbamoyl)phenyl)azo)-6-(phenylazo)naphthalene-2,7-disulfonic acid; Reactive Black 5 related intermediate; Tetrasulfonated azo dye intermediate; Polyazo dye precursor; Azo dye for leather and textile
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to rigorous quality testing protocols to ensure batch-to-batch consistency and purity for downstream synthesis. Quality is verified through modern analytical techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profile is provided with each 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Solubility (Water)	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Sulfated Ash	≤ 1.0%

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