Description

Benzenesulfonic Acid, 4-4-(4-Hydroxyphenyl)Azophenylamino-3-Nitro-, Sodium Salt is a specialized azo dye intermediate and functional chemical compound. This product is valued for its precise molecular structure, which imparts specific chromophoric and chemical properties critical for advanced manufacturing processes. It is primarily required by industries involved in the synthesis of high-performance dyes, pigments, and functional materials where colorant development and chemical modification are key.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of complex, high-value azo dyes for textiles, inks, and coatings.
• Functional Material Synthesis: Used in research and production of advanced materials, including liquid crystals and optical filters, due to its specific aromatic and ionic structure.
• Laboratory Reagent: Employed as a standard or reagent in analytical chemistry and photochemical research.
• Specialty Chemical Manufacturing: Acts as a precursor or modifying agent in the production of other sulfonated aromatic compounds for various industrial applications.

Basic Information

Item	Details
Product Name	Benzenesulfonic Acid, 4-4-(4-Hydroxyphenyl)Azophenylamino-3-Nitro-, Sodium Salt
CAS No.	156738-27-1
Molecular Formula	C18H13N4NaO6S
Molecular Weight	436.37 g/mol
Synonyms	Sodium 4-((4-((4-hydroxyphenyl)diazenyl)phenyl)amino)-3-nitrobenzenesulfonate; 3-Nitro-4-((4-((4-hydroxyphenyl)azo)phenyl)amino)benzenesulfonic Acid Sodium Salt; 4-[(E)-[4-[(4-Hydroxyphenyl)diazenyl]phenyl]amino]-3-nitrobenzenesulfonic Acid Sodium Salt; Azo Dye Intermediate 156738-27-1; CI 156738-27-1; Benzenesulfonic acid derivative sodium salt
EINECS	Contact for details

Quality Control

Our production of Benzenesulfonic Acid, 4-4-(4-Hydroxyphenyl)Azophenylamino-3-Nitro-, Sodium Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency meet exacting standards. Certificates of Analysis (COA) documenting key parameters are available upon request to support 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 room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	Contact for details

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