Description

6-Amino-5-[[4-[[4-[[[(3,4-Dichlorophenyl)Amino]Carbonyl]Amino]Benzoyl]Amino]-2-Sulphophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonic Acid is a high-purity, complex azo dye intermediate characterized by its sulfonic acid groups and dichlorophenyl substituents. This compound matters for its role as a critical precursor in synthesizing high-performance, colorfast dyes and pigments, particularly for demanding applications. Industrial manufacturers and R&D laboratories in the textile, ink, and specialty chemical sectors require this intermediate to develop products with specific chromatic and fastness properties.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-value reactive dyes for cotton and other cellulosic fibers, providing excellent wash and light fastness.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for high-quality inks, coatings, and plastics where color stability is paramount.
• Research & Development: Serves as a valuable synthon in academic and industrial R&D for exploring new chromophores and functional dyes.
• Textile Printing Inks: Employed in the formulation of advanced textile printing inks that require brilliant shades and durability.
• Functional Dye Synthesis: Potential use in creating dyes for non-textile applications, such as sensitizers for dye-sensitized solar cells (DSSCs) or biological stains.

Basic Information

Product Name	6-Amino-5-[[4-[[4-[[[(3,4-Dichlorophenyl)Amino]Carbonyl]Amino]Benzoyl]Amino]-2-Sulphophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonic Acid
CAS No.	93857-74-0
Molecular Formula	C30H20Cl2N8O9S2
Molecular Weight	779.56 g/mol
Synonyms	6-Amino-5-{[4-({4-[(3,4-Dichlorophenyl)carbamoyl]carbamoyl}benzamido)-2-sulfophenyl]diazenyl}-4-hydroxynaphthalene-2-sulfonic acid; CI Reactive Red 238 intermediate; Azo dye intermediate 93857-74-0; 5-[[4-[[4-[[(3,4-Dichlorophenyl)carbamoyl]carbamoyl]benzoyl]amino]-2-sulfophenyl]azo]-6-amino-4-hydroxy-2-naphthalenesulfonic acid; Benzoic acid, 4-[[(3,4-dichlorophenyl)amino]carbonyl]amino]-4'-[(6-amino-4-hydroxy-3-sulfo-2-naphthalenyl)azo][1,1'-biphenyl]-3-sulfonic acid derivative
EINECS	Contact for details

Quality Control

Our 6-Amino-5-[[4-[[4-[[[(3,4-Dichlorophenyl)Amino]Carbonyl]Amino]Benzoyl]Amino]-2-Sulphophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and consistent batch-to-batch performance. Certificates of Analysis (COA) detailing purity, impurity profile, and physical data are provided and available upon request.

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 each use to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (typical 97-99%)
Water Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in Water)	Complete, clear solution

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