Description

Trisodium 4-Amino-3-[[4-[[4-Amino-2-Hydroxy-5-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-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-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, stable colors.

Application

• Primary Intermediate for Reactive Dyes: Key building block for manufacturing high-quality reactive dyes used in cotton and cellulose fiber dyeing.
• Textile Colorant Synthesis: Used in the production of direct and acid dyes for wool, silk, and nylon fabrics.
• Inkjet Ink Formulations: Serves as a precursor for pigments in professional and industrial inkjet printing inks.
• Leather Dye Production: Intermediate in the synthesis of dyes for the leather tanning and finishing industry.
• Paper Coloring Agents: Used in the manufacture of dyes for specialty paper and packaging materials.
• Research & Development: A valuable compound for R&D laboratories developing new chromophores and functional dyes.

Basic Information

Product Name	Trisodium 4-Amino-3-[[4-[[4-Amino-2-Hydroxy-5-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate
CAS No.	85153-25-9
Molecular Formula	C40H24N10Na3O13S3
Molecular Weight	Approx. 1026.85 g/mol
Synonyms	Trisodium 4-amino-3-{[4-({4-amino-2-hydroxy-5-[(4-sulfonatophenyl)diazenyl]phenyl}diazenyl)phenyl]diazenyl}-5-hydroxy-6-(phenyldiazenyl)naphthalene-2,7-disulfonate; C.I. Reactive Black 5 Intermediate; Polyazo Dye Intermediate; Reactive Dye Precursor; Tetrasodium 4-Amino-5-hydroxy-3,6-bis((4-((2-hydroxy-5-((4-sulfonatophenyl)diazenyl)phenyl)diazenyl)phenyl)diazenyl)naphthalene-2,7-disulfonate (related); Azo Dye 85153-25-9; Black 5 Intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems, ensuring batch-to-batch consistency for your synthesis processes. Quality is verified through comprehensive analytical methods including HPLC, UV-Vis spectroscopy, and titration to confirm identity, purity, and functional group integrity. A Certificate of Analysis (COA) detailing purity, assay, and impurity profile is provided with every shipment.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect stability and handling properties. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark powder or 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.