Description

Disodium 3,3'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bis[Benzenesulphonate] is a high-purity, synthetic organic dye intermediate known for its precise chemical structure and consistent performance. This compound is valued for its role as a critical precursor in the production of specialized dyes and pigments, offering excellent color strength and stability. It is primarily sought by manufacturers in the textile, ink, and specialty chemical industries for applications requiring reliable and high-quality chromophoric components.

Application

• Textile Dyeing: As a key intermediate for synthesizing reactive and direct dyes used on cotton, wool, and synthetic fibers.
• Ink Manufacturing: Used in the production of high-performance inks for packaging, security printing, and digital applications.
• Pigment Synthesis: Serves as a crucial building block in the manufacture of organic pigments for plastics, coatings, and paints.
• Research & Development: Employed in chemical R&D for developing new colorants and studying azo dye chemistry.
• Analytical Reagents: Potential use as a staining agent or colorimetric indicator in laboratory settings.
• Specialty Chemical Production: An intermediate for functional chemicals where specific chromophore integration is required.

Basic Information

Item	Details
Product Name	Disodium 3,3'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bis[Benzenesulphonate]
CAS No.	67875-16-5
Molecular Formula	C34H28N6Na2O11S2
Molecular Weight	806.71 g/mol
Synonyms	Acid Red 337; C.I. 17200; Disodium 6,6'-[(4,4'-Carbonylbis(2-methoxy-5-methyl-4,1-phenylene))bis(azo)]bis(3-sulfobenzoate); Benzenesulfonic acid, 3,3'-[carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis-, disodium salt; C.I. Acid Red 337; Lanasyn Red 2G; Telon Red K-2G; Acid Leather Red 2G
EINECS	Contact for details

Quality Control

Our production of Disodium 3,3'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bis[Benzenesulphonate] adheres to stringent quality management systems. 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) documenting 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). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Reddish-brown to dark red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, complete solution

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