Description

7-Benzoylamino-4-Hydroxy-3-[[4-[(2-Chloro-6-Methyl-4-Sodiosulfophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulfonic Acid Sodium Salt is a high-purity, synthetic azo dye intermediate of significant commercial importance. Its complex molecular structure is engineered to provide excellent color properties and binding characteristics for demanding industrial applications. This compound is essential for manufacturers in the textile, ink, and specialty pigment sectors seeking consistent, high-performance raw materials for their formulations.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-value, complex azo dyes, particularly for textiles and leather.
• Textile Dyeing and Printing: Used in the production of dyes for coloring natural and synthetic fibers, offering good wash and light fastness.
• Specialty Ink Formulation: A critical component in manufacturing pigments for high-performance inks used in packaging, security printing, and digital applications.
• Industrial Pigment Production: Employed in creating organic pigments for plastics, coatings, and other colored polymer systems.
• Research & Development: Utilized in chemical R&D for developing new chromophores and studying structure-property relationships in dye chemistry.
• Analytical Chemistry: Can be used as a standard or reagent in specific colorimetric analytical methods.

Basic Information

Product Name	7-Benzoylamino-4-Hydroxy-3-[[4-[(2-Chloro-6-Methyl-4-Sodiosulfophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulfonic Acid Sodium Salt
CAS No.	5873-23-4
Molecular Formula	C30H20ClN5Na2O8S2
Molecular Weight	748.08 g/mol
Synonyms	Acid Red 337; C.I. 17210; Sodium 7-benzamido-4-hydroxy-3-[[4-[(2-chloro-6-methyl-4-sulfonatophenyl)azo]phenyl]azo]naphthalene-2-sulfonate; 7-Benzoylamino-4-hydroxy-3-({4-[(2-chloro-6-methyl-4-sulfonatophenyl)diazenyl]phenyl}diazenyl)naphthalene-2-sulfonate sodium salt; Benzenesulfonic acid, 2-chloro-6-methyl-4-[[4-[[7-(benzoylamino)-4-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]azo]-, sodium salt (1:2); Azo dye intermediate 5873-23-4
EINECS	Contact for details

Quality Control

Our production of 7-Benzoylamino-4-Hydroxy-3-[[4-[(2-Chloro-6-Methyl-4-Sodiosulfophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulfonic Acid Sodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and consistent performance in downstream applications. Certificates of Analysis (COA) detailing batch-specific results are provided and traceability is maintained throughout the supply chain.

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 when not in use to prevent absorption of atmospheric moisture, which can affect product quality and handling properties. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (Typical 97-99%)
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility (1% in Water)	Complete, clear solution

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