Description

4-[[4-[4-Nitrophenyl]Anilino]Azo]Benzenesulphonic Acid is a specialized azo dye intermediate of significant commercial importance. This compound is valued for its role in synthesizing high-performance dyes and pigments with specific optical and chemical properties. It is primarily required by manufacturers in the dye and pigment, textile, and specialty chemical industries for producing colorants with enhanced lightfastness and chroma.

Application

This chemical serves as a critical building block in various industrial synthesis processes. Its primary and derived applications include:

• Key intermediate for the synthesis of azo dyes and pigments, particularly for textiles and inks.
• Manufacture of colorants for specialty inks, including security and high-resolution printing applications.
• Production of dyes for synthetic fibers such as polyester and nylon.
• Research and development of novel optical materials and sensors.
• Potential use in the synthesis of liquid crystal display (LCD) color filters.
• Laboratory use as a chemical reagent in organic synthesis and analytical chemistry.

Basic Information

Product Name	4-[[4-[4-Nitrophenyl]Anilino]Azo]Benzenesulphonic Acid
CAS No.	93982-24-2
Molecular Formula	C24H18N4O5S
Molecular Weight	474.49 g/mol
Synonyms	4-[(4-[(4-Nitrophenyl)amino]phenyl)azo]benzenesulfonic Acid; Benzenesulfonic acid, 4-[[4-[(4-nitrophenyl)amino]phenyl]azo]-; 4-((4-((4-Nitrophenyl)amino)phenyl)diazenyl)benzenesulfonic Acid; p-[(p-[(p-Nitrophenyl)amino]phenyl)azo]benzenesulfonic Acid; Azo dye intermediate 93982-24-2; 4-[(4-[(4-Nitroanilino)phenyl]azo]benzenesulfonate; 4-(4-(4-Nitrophenylamino)phenylazo)benzenesulfonic Acid
EINECS	Contact for details

Quality Control

Our production of 4-[[4-[4-Nitrophenyl]Anilino]Azo]Benzenesulphonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure high purity, consistent composition, and batch-to-batch reliability. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

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 and incompatible materials. The compound is light-sensitive (store away from light).

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%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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