Description

Benzenesulfonic Acid,4-[[2-[[3,3'-Dichloro-4'-[[2-Oxo-1-[(Phenylamino)Carbonyl]Propyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]-1,3-Dioxobutyl]Amino]- is a high-purity, complex azo dye intermediate characterized by its specific molecular architecture. This compound is essential for synthesizing high-performance dyes and pigments, offering critical chromophoric and auxochromic properties. It is primarily required by manufacturers in the specialty chemicals, textile dyeing, and advanced materials sectors seeking reliable and consistent raw materials for their production processes.

Application

This specialized chemical serves as a key precursor in several advanced industrial applications:

• Primary intermediate for the synthesis of high-grade azo dyes and pigments used in textiles and plastics.
• Manufacturing of specialty colorants for inks, coatings, and advanced polymeric materials.
• Research and development of novel functional dyes for optical and electronic applications.
• Production of complex organic compounds in fine chemical and pharmaceutical research.

Basic Information

Product Name	Benzenesulfonic Acid,4-[[2-[[3,3'-Dichloro-4'-[[2-Oxo-1-[(Phenylamino)Carbonyl]Propyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]-1,3-Dioxobutyl]Amino]-
CAS No.	87553-59-1
Molecular Formula	C38H28Cl2N6O7S
Molecular Weight	783.63 g/mol
Synonyms	4-[[2-[[3,3'-Dichloro-4'-[[2-oxo-1-[(phenylamino)carbonyl]propyl]azo][1,1'-biphenyl]-4-yl]azo]-1,3-dioxobutyl]amino]benzenesulfonic acid; CI 26080; Acid Orange 156; Azo dye intermediate 87553-59-1; Benzenesulfonic acid, 4-[[2-[[3,3'-dichloro-4'-[[2-oxo-1-[(phenylamino)carbonyl]propyl]azo][1,1'-biphenyl]-4-yl]azo]-1,3-dioxobutyl]amino]-; 87553-59-1 (CAS); Complex azo dye precursor
EINECS	Contact for details

Quality Control

Our production of this intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced chromatographic and spectroscopic techniques. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment, supporting your quality assurance and regulatory compliance needs.

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 sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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