Description

Tetrasodium 5,5'-[Carbonylbis[Imino-4,1-Phenylenecarbonylimino(2-Sulphonato-4,1-Phenylene)Azo]]Bis[6-Amino-4-Hydroxynaphthalene-2-Sulphonate] is a high-purity, water-soluble azo dye intermediate with a complex polyfunctional structure. This compound is valued for its role as a critical precursor in the synthesis of high-performance dyes and pigments, offering excellent chromophore properties and stability. It is primarily sought by manufacturers in the specialty chemicals, textile dyeing, and advanced material research sectors for developing products with specific colorfastness and functional characteristics.

Application

• Primary Intermediate for Reactive Dyes: Key building block in manufacturing high-grade reactive dyes for cotton and cellulose fiber dyeing.
• Specialty Pigment Synthesis: Used in the production of complex organic pigments for inks, coatings, and plastics requiring high color strength.
• Functional Dye Development: Serves as a precursor for dyes used in biological staining, sensors, and other high-tech applications.
• Textile Chemical Research: Employed in R&D for developing new dye formulations with improved wash-fastness and light-fastness properties.
• Laboratory Reagent: Used as a standard or reagent in analytical and synthetic chemistry research due to its defined structure.

Basic Information

Product Name	Tetrasodium 5,5'-[Carbonylbis[Imino-4,1-Phenylenecarbonylimino(2-Sulphonato-4,1-Phenylene)Azo]]Bis[6-Amino-4-Hydroxynaphthalene-2-Sulphonate]
CAS No.	41098-60-6
Molecular Formula	C53H32N10Na4O19S4
Molecular Weight	~1290.0 g/mol (Contact for exact details)
Synonyms	Acid Blue 113 Intermediate; C.I. Reactive Blue 221 Intermediate; Tetrasodium 5,5'-[Carbonylbis(imino-4,1-phenylenecarbonylimino(2-sulfo-4,1-phenylene)azo)]bis(6-amino-4-hydroxy-2-naphthalenesulfonate); Direct Blue 86 Related Compound; Azo Dye Precursor 41098-60-6; Bis(azo) Tetrasulfonate Salt; CAS 41098-60-6
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR and UV-Vis spectroscopy, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are provided with each shipment.

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). This material is moisture-sensitive (hygroscopic); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 95.0% (Contact for higher grades)
Water Content	≤ 5.0%
Solubility (1% in Water)	Complete, clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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