Description

Sodium [[4-[(4-Hydroxyphenyl)Azo]-5-Methoxy-2-Methylphenyl]Azo]-4-Benzenesulphonate is a high-purity synthetic azo dye intermediate. This compound is valued for its precise chemical structure and consistent performance in demanding synthesis processes. It is primarily sought by manufacturers in the specialty chemical and dye industries for producing high-quality colorants and pigments.

Application

This azo compound serves as a critical building block in various industrial colorant applications. Its specific structure makes it suitable for high-performance uses.

• Primary Intermediate for Dyes & Pigments: Synthesis of high-value azo dyes for textiles, inks, and coatings.
• Specialty Colorant Production: Manufacturing of pigments requiring specific hue, lightfastness, and thermal stability properties.
• Functional Dye Synthesis: Potential precursor for dyes used in non-textile applications, such as in paper or leather.
• Research & Development: Used in chemical R&D for developing novel chromophores and studying azo coupling reactions.

Basic Information

Product Name	Sodium [[4-[(4-Hydroxyphenyl)Azo]-5-Methoxy-2-Methylphenyl]Azo]-4-Benzenesulphonate
CAS No.	68400-34-0
Molecular Formula	C26H21N4NaO6S
Molecular Weight	540.52 g/mol
Synonyms	Sodium 4-[[4-[(4-hydroxyphenyl)azo]-5-methoxy-2-methylphenyl]azo]benzenesulfonate; Benzenesulfonic acid, 4-[[4-[(4-hydroxyphenyl)azo]-5-methoxy-2-methylphenyl]azo]-, sodium salt; C.I. 14720; Acid Orange 156; Azo dye intermediate OA-156; 4-[(4-Hydroxyphenyl)azo]-5-methoxy-2-methylbenzenediazonium, inner salt with 4-hydroxybenzenesulfonic acid; Sodium salt of 4-[(4-Hydroxyphenyl)azo]-5-methoxy-2-methylphenyl azo benzenesulphonic acid
EINECS	Contact for details

Quality Control

Our Sodium [[4-[(4-Hydroxyphenyl)Azo]-5-Methoxy-2-Methylphenyl]Azo]-4-Benzenesulphonate is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency meet the high standards required for industrial synthesis. A Certificate of Analysis (COA) detailing specific batch results is provided with each shipment.

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 tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality.

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 (as Pb)	≤ 20 ppm
Solubility	Soluble in water, slightly soluble in ethanol

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