Description

Tetrasodium 3,3'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bis(Naphthalene-1,5-Disulphonate) is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex molecular structure provides excellent chromophoric properties, making it a critical precursor for the synthesis of specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vivid and stable colors.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-performance reactive dyes for cotton and other cellulosic fibers.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for inks, plastics, and automotive coatings requiring high color strength and weatherfastness.
• Textile Dyeing and Printing: Serves as a crucial component in formulations for textile printing pastes and dye baths.
• Biological Staining Reagents: Potential use in the development of histological stains and indicators in analytical chemistry due to its azo chromophore.
• Research & Development: Valuable for chemical R&D in synthesizing novel chromophores and studying azo dye chemistry.

Basic Information

Item	Details
Product Name	Tetrasodium 3,3'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bis(Naphthalene-1,5-Disulphonate)
CAS No.	6420-33-3
Molecular Formula	C41H28N6Na4O15S4
Molecular Weight	1048.89 g/mol
Synonyms	Direct Blue 199 (Tetrasodium Salt); C.I. 74190; Tetrasodium 6,6'-[Carbonylbis[imino(2-methoxy-5-methyl-4,1-phenylene)azo]]bis(1,5-naphthalenedisulfonate); Tetrasodium 6,6'-[Carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis(1,5-naphthalenedisulphonate); 6420-33-3; Azo Dye Intermediate 6420-33-3
EINECS	Contact for details

Quality Control

Our production of Tetrasodium 3,3'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bis(Naphthalene-1,5-Disulphonate) adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet the high standards required for dye intermediate applications. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue to violet powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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