Description

Tetrasodium 3-[(4-ethoxy-3-sulphonatophenyl)azo]-4-hydroxy-7-[[[[5-hydroxy-7-sulphonato-6-[(4-sulphonatophenyl)azo]-2-naphthyl]amino]carbonyl]amino]naphthalene-2-sulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its ability to impart strong, vibrant color properties in advanced dye synthesis. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance dyes and pigments.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton and other cellulosic fibers.
• Textile Colorant Production: Used in manufacturing dyes that offer excellent wash-fastness and light-fastness properties for the textile industry.
• Ink and Toner Formulations: Serves as a colorant precursor in the production of industrial inks, including those for digital printing and packaging.
• Specialty Pigment Synthesis: Employed in creating complex organic pigments for plastics, coatings, and high-performance materials.
• Research & Development: Utilized in chemical R&D labs for developing novel chromophores and studying dye-polymer interactions.
• Paper Coloring: Can be used in the manufacture of dyes for specialty paper products requiring specific color standards.

Basic Information

Product Name	Tetrasodium 3-[(4-ethoxy-3-sulphonatophenyl)azo]-4-hydroxy-7-[[[[5-hydroxy-7-sulphonato-6-[(4-sulphonatophenyl)azo]-2-naphthyl]amino]carbonyl]amino]naphthalene-2-sulphonate
CAS No.	83763-83-1
Molecular Formula	C41H28N6Na4O19S4
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Red 198; Tetrasodium 6-[[4-[(4-Ethoxy-3-sulfophenyl)azo]-1-hydroxy-7-sulfo-2-naphthalenyl]carbamoylamino]-4-hydroxy-3-[(4-sulfophenyl)azo]-2-naphthalenesulfonate; Reactive Red 198; Reactive Brilliant Red M-3BE; C.I. 18221; RR 198; Benzenesulfonic acid, 4-[[7-[[[4-[(4-ethoxy-3-sulfophenyl)azo]-1-hydroxy-7-sulfo-2-naphthalenyl]amino]carbonyl]amino]-1-hydroxy-3-sulfo-6-(2-naphthalenylazo)-, tetrasodium salt
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and purity required for sensitive synthesis processes. Quality is verified through advanced analytical techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with every shipment to support your quality assurance systems.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after each use to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
Heavy Metals (as Pb)	Max. 20 ppm
pH (1% Solution)	7.0 - 9.0

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