Description

Trisodium 5-[[2-Amino-4-[[4-[2-(4-Nitro-2-Sulphonatophenyl)Vinyl]-3-Sulphonatophenyl]Azoxy]Phenyl]Azo]Naphthalene-1-Sulphonate is a high-purity, water-soluble azo dye intermediate with a complex, multi-functional structure. This compound is engineered to deliver exceptional chromophore properties and chemical stability, making it a critical precursor for synthesizing advanced colorants. It is primarily required by manufacturers in the textile dyeing, specialty ink, and high-performance pigment industries seeking to produce vivid, durable colors. CAS No. 90604-82-3.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-quality reactive dyes used in cotton and cellulose fiber dyeing.
• Specialty Ink Production: Used in the manufacture of inks for digital textile printing and other applications requiring high color strength and lightfastness.
• Functional Pigment Synthesis: Serves as a precursor for creating complex organic pigments with specific performance characteristics.
• Research & Development: Utilized in chemical R&D for developing novel chromophores and studying azo dye chemistry.
• Analytical Chemistry: Can be employed as a standard or reagent in specific colorimetric analytical methods.

Basic Information

Product Name	Trisodium 5-[[2-Amino-4-[[4-[2-(4-Nitro-2-Sulphonatophenyl)Vinyl]-3-Sulphonatophenyl]Azoxy]Phenyl]Azo]Naphthalene-1-Sulphonate
CAS No.	90604-82-3
Molecular Formula	C36H22N6Na3O13S3
Molecular Weight	936.81 g/mol
Synonyms	5-[[2-Amino-4-[[4-[2-(4-Nitro-2-sulfophenyl)vinyl]-3-sulfophenyl]azoxy]phenyl]azo]naphthalene-1-sulfonic acid trisodium salt; Trisodium 1-amino-2-[[4-[[4-[2-(4-nitro-2-sulfonatophenyl)vinyl]-3-sulfonatophenyl]azoxy]phenyl]azo]naphthalene-4-sulfonate; Reactive Dye Intermediate; Azo Dye Intermediate (Complex); CI Reactive Red 238 (related); Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Every lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation. A detailed Certificate of Analysis (COA) documenting assay, impurity profile, and physical specifications is provided with each shipment to support your quality assurance protocols.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed in a low-humidity environment to prevent degradation and caking.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Solubility (in Water)	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.