Description

3-[(3,5-Dichloro-2-Hydroxyphenyl)Azo]-4-Hydroxy-7-[(4-Methoxyphenyl)Amino]-2-Naphthalenesulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate and specialty chemical. It is valued for its precise chromophoric structure, which is critical for synthesizing high-performance dyes and pigments with specific color and fastness properties. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries requiring consistent quality for advanced colorant production.

Application

• Primary Intermediate for Azo Dyes: A key building block for synthesizing complex, high-value azo dyes used in textile coloring.
• Specialty Pigment Manufacturing: Used in the production of pigments for inks, coatings, and plastics where specific color shades and stability are required.
• Research & Development: Serves as a crucial reagent in chemical R&D for developing new chromophores and functional dyes.
• Analytical Chemistry: Can be utilized as a staining agent or a colorimetric indicator in specific laboratory analyses.
• Functional Material Synthesis: Potential use in the development of advanced materials, such as dye-sensitized solar cells or photonic components.

Basic Information

Product Name	3-[(3,5-Dichloro-2-Hydroxyphenyl)Azo]-4-Hydroxy-7-[(4-Methoxyphenyl)Amino]-2-Naphthalenesulfonic Acid Sodium Salt
CAS No.	68413-54-7
Molecular Formula	C23H15Cl2N4NaO6S
Molecular Weight	569.35 g/mol
Synonyms	Acid Red 337 (Sodium Salt); C.I. 17210; 7-[(4-Methoxyphenyl)amino]-3-[(3,5-dichloro-2-hydroxyphenyl)azo]-4-hydroxy-2-naphthalenesulfonic acid sodium salt; Sodium 3-[(3,5-dichloro-2-hydroxyphenyl)azo]-4-hydroxy-7-[(4-methoxyphenyl)amino]-2-naphthalenesulfonate; Azo dye intermediate 68413-54-7
EINECS	Contact for details

Quality Control

Our 3-[(3,5-Dichloro-2-Hydroxyphenyl)Azo]-4-Hydroxy-7-[(4-Methoxyphenyl)Amino]-2-Naphthalenesulfonic Acid Sodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided with each shipment to guarantee traceability and compliance.

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 tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and handling.

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
Residual Solvents (GC)	Meets ICH guidelines

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