Description

4-Amino-3-[[4-[[[4-[(8-Amino-1-Hydroxy-5-Sulpho-2-Naphthyl)Azo]Phenyl]Amino]Carbonyl]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonic Acid is a high-purity, polyfunctional azo dye intermediate of significant industrial importance. Its complex molecular structure, featuring multiple azo linkages, amino, hydroxyl, and sulphonic acid groups, makes it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce vibrant, colorfast, and structurally complex colorants. Its consistent quality and reliable supply are paramount for ensuring batch-to-batch reproducibility in final product formulations.

Application

This advanced azo intermediate is engineered for high-value applications where color strength and molecular stability are critical. Its primary and derived uses include:

• Precursor for Reactive Dyes: Key building block for synthesizing high-grade reactive dyes used in cotton, wool, and nylon dyeing.
• Manufacture of Acid Dyes: Essential intermediate for producing acid dyes with excellent affinity for protein fibers like silk and leather.
• Specialty Pigment Synthesis: Used in the production of high-performance organic pigments for inks, coatings, and plastics.
• Functional Dye Production: Serves as a starting material for dyes used in non-textile applications, including lasers, optical data storage, and biomedical staining.
• Research & Development: A valuable compound for chemical R&D in exploring new chromophores and dye-polymer interactions.

Basic Information

Product Name	4-Amino-3-[[4-[[[4-[(8-Amino-1-Hydroxy-5-Sulpho-2-Naphthyl)Azo]Phenyl]Amino]Carbonyl]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonic Acid
CAS No.	54274-15-6
Molecular Formula	C39H27N9O11S3
Molecular Weight	909.87 g/mol
Synonyms	C.I. Reactive Black 5 Intermediate; 4-Amino-5-hydroxy-6-(phenylazo)-3-[[4-[[[4-[(8-amino-1-hydroxy-5-sulfo-2-naphthyl)azo]phenyl]amino]carbonyl]phenyl]azo]naphthalene-2,7-disulfonic Acid; Reactive Black 5 Key Intermediate; Polyazo Dye Intermediate; Azo Dye Precursor 54274-15-6; Tetrasulfonated Azo Compound; Benzenesulfonic acid, 4-amino-3-[[4-[[[4-[(8-amino-1-hydroxy-5-sulfo-2-naphthyl)azo]phenyl]amino]carbonyl]phenyl]azo]-5-hydroxy-6-(phenylazo)-2,7-naphthalenedisulfonic acid
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management protocols to ensure purity and batch consistency vital for downstream synthesis. Every lot is characterized using advanced analytical techniques including HPLC, UV-Vis, and NMR to confirm identity and composition. We provide comprehensive Certificates of Analysis (COA) detailing purity, impurity profile, and physical specifications. Our quality system is designed to support customers requiring materials for GMP-compliant or ISO-certified manufacturing processes.

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 original container must be kept tightly sealed to prevent absorption of atmospheric moisture which can affect purity and handling properties. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Soluble, clear solution

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