Description

Sodium 4-[[4-[(Nitrophenyl)Nitrosoamino]Phenyl]Azo]Benzenesulphonate is a specialized azo dye intermediate characterized by its complex molecular structure, which imparts specific chromophoric properties. This compound is valued for its role in synthesizing high-performance dyes and pigments with excellent color fastness and stability. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries seeking to produce vivid and durable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of complex, high-value azo dyes for textiles and leather.
• Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics, where color intensity and lightfastness are critical.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying azo coupling reactions.
• Specialty Chemical Synthesis: Acts as a precursor for functional dyes used in non-textile applications, such as in paper coloring or as biological stains.

Basic Information

Product Name	Sodium 4-[[4-[(Nitrophenyl)Nitrosoamino]Phenyl]Azo]Benzenesulphonate
CAS No.	85252-32-0
Molecular Formula	C24H16N6NaO6S
Molecular Weight	539.48 g/mol
Synonyms	Sodium 4-[(4-[(4-Nitrophenyl)nitrosoamino]phenyl)azo]benzenesulfonate; Benzenesulfonic acid, 4-[[4-[(4-nitrophenyl)nitrosoamino]phenyl]azo]-, sodium salt; Azo dye intermediate 85252-32-0; 4-[[4-[(4-Nitrophenyl)nitrosoamino]phenyl]azo]benzenesulfonic acid sodium salt; CI 11290 (related class); Nitrophenyl nitrosoamino azo benzenesulfonate sodium salt; Disperse dye precursor (generic); Sodium salt of nitro-substituted azo sulfonate
EINECS	Contact for details

Quality Control

Our production of Sodium 4-[[4-[(Nitrophenyl)Nitrosoamino]Phenyl]Azo]Benzenesulphonate adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. The material is manufactured and tested in facilities that implement robust quality management systems. 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

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)	≤ 1.0%
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.