Description

Trisodium 4-amino-3-[[4-[[4-[[2-amino-4-[[2-(diethylamino)ethyl]amino]phenyl]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 commercial importance. Its complex molecular structure, featuring multiple azo linkages and sulphonate groups, makes it a critical precursor for synthesizing specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vivid, high-performance colorants with excellent fastness properties.

Application

• Primary Intermediate for Reactive and Direct Dyes: A key building block in the synthesis of high-value, wash-fast dyes for cotton, wool, and polyamide fibers.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for high-grade inks, including packaging and security inks.
• Functional Dye Synthesis: Serves as a precursor for dyes used in non-textile applications such as laser dyes, sensitizers, and colorants for specialty polymers.
• Research & Development: Utilized in academic and industrial R&D labs for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Analytical Chemistry: Can be employed as a staining agent or a complexometric indicator in specific analytical methodologies.

Basic Information

Item	Details
Product Name	Trisodium 4-amino-3-[[4-[[4-[[2-amino-4-[[2-(diethylamino)ethyl]amino]phenyl]azo]phenyl]amino]-3-sulphonatophenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
CAS No.	94159-52-1
Molecular Formula	C44H39N11Na3O13S3
Molecular Weight	Approx. 1080.0 g/mol
Synonyms	Reactive Black 5 Precursor; Polyazo Dye Intermediate; C.I. Reactive Black 5 related compound; Trisodium 1-amino-2-[[4-[[4-[[2-amino-4-[(2-diethylaminoethyl)amino]phenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-8-hydroxy-3,6-disulfonaphthalene; Azo Dye CAS 94159-52-1; Tetrasodium salt variant may exist; Complex sulphonated azo dye intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Every lot is characterized using advanced analytical techniques including HPLC, UV-Vis spectroscopy, and elemental analysis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profile is provided with each shipment, ensuring full traceability and compliance with your internal specifications.

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 stability and handling properties.

Specification

Item	Specification
Appearance	Dark blue to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content (KF)	≤ 5.0%
Solubility (in Water)	Freely soluble, clear solution
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 5.0%

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