Description

4,4'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bis(Benzenesulfonic Acid)Disodium 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 characteristics and stability. This compound is essential for manufacturers and R&D laboratories in the textile, ink, and specialty chemical industries seeking to develop or produce advanced coloring agents.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a critical building block in the synthesis of complex, high-value azo dyes, especially those requiring specific shades of yellow, orange, or red.
• Textile Dye Manufacturing: Used in the production of dyes for coloring natural and synthetic fibers, where its sulfonic acid groups enhance water solubility and fiber affinity.
• Inkjet and Printing Ink Formulation: Employed in the development of specialized inks where color fastness, solubility, and consistency are paramount.
• Research & Development: A valuable compound for chemical research focused on novel dye structures, photochemical properties, and material science applications.
• Specialty Chemical Synthesis: Acts as a functional intermediate for creating other chemical products where its specific aromatic and azo structure is required.

Basic Information

Item	Details
Product Name	4,4'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bis(Benzenesulfonic Acid)Disodium Salt
CAS No.	10114-63-3
Molecular Formula	C31H26N6Na2O10S2
Molecular Weight	744.67 g/mol
Synonyms	Acid Yellow 61 (C.I. 13861); C.I. Acid Yellow 61; Disodium 4,4'-[carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]dibenzenesulfonate; Benzenesulfonic acid, 4,4'-[carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis-, disodium salt; Azo dye intermediate Y-61; Light Fast Yellow 3G; Telon Fast Yellow 3GL
EINECS	233-322-8

Quality Control

Our production of 4,4'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bis(Benzenesulfonic Acid)Disodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting industry and customer specifications. A detailed Certificate of Analysis (COA) documenting purity, impurity profile, and physical characteristics is provided with each shipment to guarantee traceability and batch-to-batch consistency.

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 light-sensitive (store away from light) and hygroscopic (moisture-sensitive); prolonged exposure to moisture or direct light should be avoided to maintain product integrity.

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.