Description

Trisodium 4-Amino-3-[[4-[[4-[(2,4-Diaminophenyl)Azo]Phenyl]Amino]-3-Sulphonatophenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate is a high-purity, water-soluble polyazo dye intermediate of significant industrial importance. Its complex molecular structure, featuring multiple azo linkages and sulphonate groups, makes it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, leather, and specialty ink industries seeking to produce deep, vibrant, and colorfast shades. Our supply is characterized by consistent quality and reliable batch-to-batch uniformity to meet stringent production requirements.

Application

• Primary Intermediate for Textile Dyes: A key building block for manufacturing high-grade, wash-fast azo dyes used in coloring cotton, wool, and nylon fibers.
• Leather Dye Production: Used in the synthesis of dyes for imparting rich, uniform color to various types of leather goods.
• Specialty Ink Formulation: Serves as a precursor for pigments in inks requiring specific optical properties and stability, such as those for security printing or packaging.
• Research & Development: Utilized in chemical R&D for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Paper Coloring: Can be employed in the synthesis of dyes for specialty paper products where high color value is required.

Basic Information

Item	Details
Product Name	Trisodium 4-Amino-3-[[4-[[4-[(2,4-Diaminophenyl)Azo]Phenyl]Amino]-3-Sulphonatophenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate
CAS No.	72906-15-1
Molecular Formula	C40H26N10Na3O13S3
Molecular Weight	Approx. 1043.89 g/mol
Synonyms	Acid Black 234 (sodium salt); C.I. 31741; Trisodium 6-(phenylazo)-4-amino-5-hydroxy-3-[[4-[[4-[(2,4-diaminophenyl)azo]phenyl]amino]-3-sulfophenyl]azo]naphthalene-2,7-disulfonate; Polyazo dye intermediate; Leather Black 234; Textile Black 234 intermediate; Azo dye precursor CAS 72906-15-1
EINECS	Contact for details

Quality Control

Every batch of our Trisodium 4-Amino-3-[[4-[[4-[(2,4-Diaminophenyl)Azo]Phenyl]Amino]-3-Sulphonatophenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate is manufactured under a strict quality management system. We employ advanced analytical techniques including HPLC and spectrophotometry to ensure high purity, consistent chromophore strength, and minimal levels of undesired isomers or by-products. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and physical specifications is provided with each shipment to guarantee it meets your technical requirements.

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). Keep away from strong oxidizing agents. Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect handling properties.

Specification

Item	Specification
Appearance	Dark brown to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Completely soluble
Ash Content (as Sulfate)	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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