Description

Trisodium 5-Amino-3-[[4-[[4-[(6-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]Phenyl]Azo]Phenyl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex polyazo structure provides excellent chromophoric properties, making it a critical precursor for synthesizing high-value dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical sectors seeking to produce vivid and stable colorants.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-performance reactive dyes for cotton and other cellulosic fibers.
• Direct Dye Manufacturing: Used in the production of direct dyes for paper, leather, and textile applications requiring good wet fastness.
• Specialty Pigment Synthesis: Serves as a precursor for creating complex organic pigments used in inks, coatings, and plastics.
• Laboratory & Research: Employed in chemical research for studying azo dye chemistry, photostability, and chromophore development.
• Functional Dye Production: Potential use in the development of functional dyes for non-textile applications, such as sensors or light-harvesting materials.

Basic Information

Item	Detail
Product Name	Trisodium 5-Amino-3-[[4-[[4-[(6-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]Phenyl]Azo]Phenyl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonate
CAS No.	52469-76-8
Molecular Formula	C40H24N9Na3O13S3
Molecular Weight	~ 987.82 g/mol
Synonyms	Reactive Black 5 Intermediate; Trisodium 4-Amino-6-[4-[4-(6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]phenyl]azo]-5-hydroxy-3-[(4-sulphophenyl)azo]naphthalene-2,7-disulphonate; C.I. Reactive Black 5, Tetrasodium Salt (related); Polyazo Dye Intermediate; Azo Dye Precursor CAS 52469-76-8; 5-Amino-4-hydroxy-3-((4-((4-((6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo)phenyl)azo)phenyl)azo)naphthalene-2,7-disulphonic acid trisodium salt
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and purity. Quality is verified through multiple analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is 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). 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 handling.

Specification

Item	Specification
Appearance	Dark blue to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
Sulfated Ash	Contact for details

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