Description

Trisodium 4-[[4-[(Chloroacetyl)Amino]Phenyl]Azo]-4'-[(1-Hydroxy-4-Sulphonato-2-Naphthyl)Azo]-5,5'-Dimethyl[1,1'-Biphenyl]-2,2'-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its role in synthesizing reactive and direct dyes, providing excellent color strength and stability in the final products. It is primarily required by manufacturers in the textile, leather, and specialty chemical industries for producing vibrant and durable colorants.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-performance reactive dyes for cotton, viscose, and other cellulosic fibers.
• Manufacture of Direct Dyes: Used in the production of direct dyes for paper, leather, and textile applications requiring good wet fastness.
• Specialty Pigment Synthesis: Serves as a precursor in the creation of complex organic pigments for inks, coatings, and plastics.
• Research & Development: Employed in chemical R&D laboratories for developing novel chromophores and studying azo dye chemistry.
• Analytical Chemistry: Can be used as a standard or reagent in analytical methods for dye identification and quantification.

Basic Information

Product Name	Trisodium 4-[[4-[(Chloroacetyl)Amino]Phenyl]Azo]-4'-[(1-Hydroxy-4-Sulphonato-2-Naphthyl)Azo]-5,5'-Dimethyl[1,1'-Biphenyl]-2,2'-Disulphonate
CAS No.	71720-94-0
Molecular Formula	C40H26ClN6Na3O13S3
Molecular Weight	1011.23 g/mol (approx.)
Synonyms	Reactive Dye Intermediate 71720-94-0; Trisodium 4-[[4-[(chloroacetyl)amino]phenyl]azo]-4'-[(1-hydroxy-4-sulphonato-2-naphthyl)azo]-5,5'-dimethyl[1,1'-biphenyl]-2,2'-disulphonate; 5,5'-Dimethyl[1,1'-biphenyl]-2,2'-disulfonic acid, 4-[[4-[(chloroacetyl)amino]phenyl]azo]-4'-[(1-hydroxy-4-sulfo-2-naphthalenyl)azo]-, trisodium salt; Azo dye intermediate CAS 71720-94-0; CI Reactive Red 198 intermediate (related); Chloroacetyl azo dye intermediate; Textile dye intermediate 71720-94-0
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high chemical purity. Each lot is analyzed using advanced techniques like HPLC and spectrophotometry to confirm identity and strength. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

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 (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	Dark red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Solubility (in Water)	Completely soluble
Heavy Metals (as Pb)	Max. 20 ppm

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