Description

Tetrasodium 2,2'-[Carbonylbis[Imino(2-Methyl-4,1-Phenylene)Azo(2-Methyl-4,1-Phenylene)Azo]]Bis[5-[(4-Sulphonatophenyl)Azo]Benzenesulphonate] is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its role in synthesizing complex, high-performance dyes and pigments, offering excellent color strength and stability. It is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant and durable colorants.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-grade reactive dyes for cotton and other cellulosic fibers.
• Pigment Manufacturing: Used in the production of high-performance organic pigments for plastics, paints, and inks.
• Textile Printing Inks: Serves as a crucial component in formulating inks for digital and screen printing on textiles.
• Leather Dyeing: Employed in the manufacture of dyes for achieving deep, uniform colors on leather goods.
• Paper Coloring: Used in the production of dyes for specialty paper and packaging materials.
• Research & Development: A valuable chemical for R&D laboratories focusing on novel chromophores and dye chemistry.

Basic Information

Item	Detail
Product Name	Tetrasodium 2,2'-[Carbonylbis[Imino(2-Methyl-4,1-Phenylene)Azo(2-Methyl-4,1-Phenylene)Azo]]Bis[5-[(4-Sulphonatophenyl)Azo]Benzenesulphonate]
CAS No.	6854-81-5
Molecular Formula	C58H40N12Na4O17S4
Molecular Weight	~1369.2 g/mol
Synonyms	Direct Blue 199; C.I. Direct Blue 199; Tetrasodium Direct Blue 199; Direct Blue 199, Tetrasodium Salt; C.I. 34219; 2,2'-[Carbonylbis[imino(2-methyl-4,1-phenylene)azo(2-methyl-4,1-phenylene)azo]]bis[5-[(4-sulfophenyl)azo]benzenesulfonic acid], tetrasodium salt; Direct Blue 199 (C.I. 34219); Tetrasodium 2,2'-[carbonylbis[imino(2-methyl-4,1-phenylene)azo]]bis[5-[(4-sulfophenyl)azo]benzenesulfonate]
EINECS	Contact for details

Quality Control

Our Tetrasodium Direct Blue 199 is manufactured under a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye intermediate applications. Certificates of Analysis (COA) documenting batch-specific results 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). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture (Karl Fischer)	≤ 5.0%
Water Solubility	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.