Description

Sodium p-[[5-[(3-Acetamidophenyl)Azo]-2,4-Dihydroxyphenyl]Azo]Benzenesulphonate is a high-purity, synthetic azo dye intermediate known for its specific chromophoric properties. This compound is critical for manufacturers requiring precise color development and consistent batch-to-batch performance in demanding applications. It is primarily utilized by producers of specialized dyes, pigments, and colorants for the textile, ink, and advanced materials industries.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of complex, high-performance azo dyes, particularly for textile fibers like cotton, wool, and nylon.
• Specialty Ink Formulations: Used in the production of colorants for inks in packaging, security printing, and digital applications where specific hue and stability are required.
• Functional Colorants for Advanced Materials: Employed in the development of colorants for plastics, coatings, and polymers where thermal stability and lightfastness are important.
• Research & Development: A valuable reagent for chemical research in organic synthesis, dye chemistry, and material science for developing new chromophores.
• Analytical Chemistry: Can be used as a standard or reagent in analytical methods for dye identification and quantification.

Basic Information

Product Name	Sodium p-[[5-[(3-Acetamidophenyl)Azo]-2,4-Dihydroxyphenyl]Azo]Benzenesulphonate
CAS No.	94386-26-2
Molecular Formula	C26H19N5NaO7S
Molecular Weight	576.52 g/mol
Synonyms	Sodium 4-[[5-[(3-acetamidophenyl)azo]-2,4-dihydroxyphenyl]azo]benzenesulfonate; Benzenesulfonic acid, 4-[[5-[(3-acetamidophenyl)azo]-2,4-dihydroxyphenyl]azo]-, sodium salt; Azo dye intermediate 94386-26-2; C.I. Acid Orange 156 (related); Sodium (E)-4-((5-((3-acetamidophenyl)diazenyl)-2,4-dihydroxyphenyl)diazenyl)benzenesulfonate; 3-Acetamido-4'-hydroxy-2,4-disulfoazobenzene sodium salt (variant); Diazo component for polyazo dyes
EINECS	Contact for details

Quality Control

Our production of Sodium p-[[5-[(3-Acetamidophenyl)Azo]-2,4-Dihydroxyphenyl]Azo]Benzenesulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) detailing all critical parameters are provided with each shipment to guarantee traceability and compliance.

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 tightly sealed after opening 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% (typical ≥ 98.0%)
Loss on Drying	≤ 2.0 %
Residue on Ignition (Sulfated Ash)	≤ 1.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility (1% in Water)	Clear solution

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