Description

4-[[4-[(4-Ethoxyphenyl)Azo]-5-Methoxy-2-Methylphenyl]Azo]Benzenesulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for synthesizing specific, high-performance dyes and pigments, particularly in applications requiring precise color properties and stability. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to develop vibrant and durable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical building block in the synthesis of complex, high-value azo dyes for textiles and fibers.
• Specialty Ink Formulation: Used in the production of colorants for inks, including those for packaging, security printing, and digital applications.
• Industrial Pigment Manufacturing: A key precursor for creating organic pigments used in plastics, paints, and coatings.
• Research & Development: Employed in chemical R&D labs for developing novel chromophores and studying dye chemistry.
• Functional Material Synthesis: Potential use in the development of materials for non-linear optics or as a ligand in metal-complex dyes.

Basic Information

Item	Detail
Product Name	4-[[4-[(4-Ethoxyphenyl)Azo]-5-Methoxy-2-Methylphenyl]Azo]Benzenesulfonic Acid Sodium Salt
CAS No.	69847-50-3
Molecular Formula	C23H23N4O5SNa
Molecular Weight	490.51 g/mol
Synonyms	Sodium 4-[[4-[(4-ethoxyphenyl)azo]-5-methoxy-2-methylphenyl]azo]benzenesulfonate; Acid Yellow 219 (C.I. 13965); C.I. Acid Yellow 219; Benzenesulfonic acid, 4-[[4-[(4-ethoxyphenyl)azo]-5-methoxy-2-methylphenyl]azo]-, sodium salt; 4-[[4-[(4-Ethoxyphenyl)hydrazinylidene]-5-methoxy-2-methylcyclohexa-2,5-dien-1-ylidene]hydrazinyl]benzenesulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques like HPLC and spectrophotometry to verify identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with every shipment to support your quality assurance processes.

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 to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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