Description

Trisodium 4-[[1-Hydroxy-6-[[[(5-Hydroxy-7-Sulphonato-2-Naphthyl)Amino]Carbonyl]Amino]-3-Sulphonato-2-Naphthyl]Azo]Benzoate is a high-purity, water-soluble azo dye intermediate with a complex, multi-functional naphthalene-based structure. This compound matters for its role as a critical precursor in the synthesis of specialized dyes and pigments, offering excellent color fastness and compatibility with various substrates. Industrial manufacturers in the textile, ink, and specialty chemical sectors need this intermediate to produce vivid, stable colors for demanding applications.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the manufacture of high-performance reactive dyes for cotton and other cellulosic fibers.
• Specialty Pigment Synthesis: Used in the production of complex organic pigments for inks, coatings, and plastics requiring specific hue and stability.
• Textile Dyeing and Printing: Imparts color in processes where strong wash and light fastness are critical performance criteria.
• Functional Dye Manufacturing: Serves as a precursor for dyes used in non-textile applications, such as paper coloring or biological stains.
• Research & Development: Employed in chemical R&D for developing new chromophores and studying structure-property relationships in dye chemistry.

Basic Information

Product Name	Trisodium 4-[[1-Hydroxy-6-[[[(5-Hydroxy-7-Sulphonato-2-Naphthyl)Amino]Carbonyl]Amino]-3-Sulphonato-2-Naphthyl]Azo]Benzoate
CAS No.	65072-26-6
Molecular Formula	C28H16N4Na3O13S3
Molecular Weight	806.57 g/mol
Synonyms	Benzoic acid, 4-[[1-hydroxy-6-[[[(5-hydroxy-7-sulfo-2-naphthalenyl)amino]carbonyl]amino]-3-sulfo-2-naphthalenyl]azo]-, trisodium salt; C.I. Reactive Red 238; Reactive Red 238; Trisodium 4-[(1-hydroxy-6-{[(5-hydroxy-7-sulfonatonaphthalen-2-yl)carbamoyl]amino}-3-sulfonatonaphthalen-2-yl)diazenyl]benzoate; 4-[[1-Hydroxy-6-[[[(5-hydroxy-7-sulfonato-2-naphthyl)amino]carbonyl]amino]-3-sulfonato-2-naphthyl]azo]benzoic acid trisodium salt
EINECS	Contact for details

Quality Control

Our production of Trisodium 4-[[1-Hydroxy-6-[[[(5-Hydroxy-7-Sulphonato-2-Naphthyl)Amino]Carbonyl]Amino]-3-Sulphonato-2-Naphthyl]Azo]Benzoate adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity for industrial synthesis. The product undergoes rigorous analytical testing, including HPLC for assay and impurity profiling. Certificates of Analysis (COA) documenting identity, purity, and key physical parameters are available upon request to support your quality assurance and regulatory compliance 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 after each use to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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