Description

3-[(4-Chloro-2-Sulfophenyl)Azo]-4-Hydroxy-7-[(2,5,6-Trichloro-4-Pyrimidinyl)Amino]-2-Naphthalenesulfonic Acid Disodium Salt is a high-purity, complex azo dye intermediate of significant industrial importance. This compound is valued for its role in synthesizing specialized dyes and pigments with enhanced color fastness and specific functional properties. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance colorants.

Application

• Textile Dye Synthesis: A key intermediate for manufacturing reactive and direct dyes used in cotton and cellulose fiber coloring.
• Specialty Pigment Production: Used in the creation of high-performance organic pigments for inks, coatings, and plastics.
• Liquid Crystal Dye (LCD) Intermediates: Serves as a precursor for dyes used in display technologies due to its specific chromophore structure.
• Biological Staining Agents: Potential use in the synthesis of histological stains for microscopy, given its azo and sulfonic acid groups.
• Research & Development: Employed in academic and industrial R&D for developing new chromogenic materials and studying azo chemistry.
• Functional Dye Manufacturing: Intermediate for dyes with specific properties like light absorption or energy transfer for niche applications.

Basic Information

Product Name	3-[(4-Chloro-2-Sulfophenyl)Azo]-4-Hydroxy-7-[(2,5,6-Trichloro-4-Pyrimidinyl)Amino]-2-Naphthalenesulfonic Acid Disodium Salt
CAS No.	72139-18-5
Molecular Formula	C20H9Cl4N6Na2O8S2
Molecular Weight	728.24 g/mol
Synonyms	Acid Red 361; C.I. 18215; Reactive Red 198 (related precursor); 2-Naphthalenesulfonic acid, 3-[(4-chloro-2-sulfophenyl)azo]-4-hydroxy-7-[(2,5,6-trichloro-4-pyrimidinyl)amino]-, disodium salt; Disodium 3-[(4-chloro-2-sulphophenyl)azo]-4-hydroxy-7-[(2,5,6-trichloropyrimidin-4-yl)amino]naphthalene-2-sulphonate; Azo dye intermediate 72139-18-5; 7-Amino-3-[(4-chloro-2-sulfophenyl)azo]-4-hydroxy-2-naphthalenesulfonic acid disodium salt, trichloropyrimidine derivative
EINECS	Contact for details

Quality Control

Our production of 3-[(4-Chloro-2-Sulfophenyl)Azo]-4-Hydroxy-7-[(2,5,6-Trichloro-4-Pyrimidinyl)Amino]-2-Naphthalenesulfonic Acid Disodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

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 opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble
Related Substances (HPLC)	Total impurities ≤ 3.0%

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