Description

5-[[4-[(2-Chloro-6-Methyl-4-Sodiosulfophenyl)Azo]-2-Methylphenyl]Azo]-8-(Phenylamino)Naphthalene-1-Sulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its primary value lies in its role as a key precursor for synthesizing a range of vivid and stable azo dyes and pigments, particularly those used in demanding industrial applications. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries who require consistent quality and reliable supply chains for their colorant production.

Application

• Primary Intermediate for Azo Dyes: Serves as a crucial building block in the synthesis of high-performance azo dyes for textiles, leather, and paper.
• Pigment Manufacturing: Used in the production of organic pigments for printing inks, including flexographic and gravure inks.
• Industrial Coatings: Imparts color to coatings for plastics, synthetic fibers, and other polymeric materials.
• Specialty Colorants: Potential use in the formulation of colorants for non-textile applications such as specialty papers and toners.
• Research & Development: Employed in chemical R&D for developing novel dye structures with enhanced properties like lightfastness and solubility.

Basic Information

Item	Detail
Product Name	5-[[4-[(2-Chloro-6-Methyl-4-Sodiosulfophenyl)Azo]-2-Methylphenyl]Azo]-8-(Phenylamino)Naphthalene-1-Sulfonic Acid Sodium Salt
CAS No.	6771-83-1
Molecular Formula	C30H22ClN5Na2O6S2
Molecular Weight	726.14 g/mol
Synonyms	Acid Red 337; C.I. 17210; 5-[[4-[(2-Chloro-6-methyl-4-sulfophenyl)azo]-2-methylphenyl]azo]-8-(phenylamino)-1-naphthalenesulfonic acid disodium salt; Disodium 5-[[4-[(2-chloro-6-methyl-4-sulfonatophenyl)azo]-2-methylphenyl]azo]-8-anilino-1-naphthalenesulfonate; Azo dye intermediate 6771-83-1; 1-Naphthalenesulfonic acid, 5-[[4-[(2-chloro-6-methyl-4-sulfophenyl)azo]-2-methylphenyl]azo]-8-(phenylamino)-, disodium salt
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. Every lot is analyzed using advanced techniques like HPLC to confirm identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment to support your quality assurance processes.

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). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of 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%
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.