Description

6-Amino-5-[[5-[(4-Chlorobenzoyl)Amino]-2-Sulfophenyl]Azo]-4-Hydroxy-2-Naphthalenesulfonic Acid Disodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for synthesizing reactive and direct dyes, particularly those requiring brilliant shades and excellent wet fastness properties. This compound is essential for manufacturers in the textile, leather, and specialty ink industries seeking to produce high-performance coloring agents.

Application

• Primary Intermediate for Reactive Dyes: A critical building block in the synthesis of high-quality reactive dyes for cotton, viscose, and other cellulosic fibers.
• Direct Dye Synthesis: Used in the manufacture of direct dyes, valued for their application simplicity and good affinity to cellulose.
• Leather Coloring Agent: Serves as an intermediate for dyes used in the leather tanning and finishing industry.
• Specialty Ink Production: Employed in the formulation of inks for jet printing and other specialized applications requiring specific color properties.
• Research & Development: Used in chemical research for developing novel chromophores and studying azo dye chemistry and properties.
• Paper Dye Intermediate: Can be utilized in the synthesis of dyes for coloring paper products.

Basic Information

Product Name	6-Amino-5-[[5-[(4-Chlorobenzoyl)Amino]-2-Sulfophenyl]Azo]-4-Hydroxy-2-Naphthalenesulfonic Acid Disodium Salt
CAS No.	70815-07-5
Molecular Formula	C23H15ClN4Na2O8S2
Molecular Weight	628.95 g/mol
Synonyms	Acid Red 337 (C.I. 17200); Disodium 6-amino-5-[[5-[(4-chlorobenzoyl)amino]-2-sulfophenyl]azo]-4-hydroxy-2-naphthalenesulfonate; C.I. 17200; 5-[[5-[(4-Chlorobenzoyl)amino]-2-sulfophenyl]azo]-6-amino-4-hydroxy-2-naphthalenesulfonic acid disodium salt; Reactive Red Dye Intermediate; Azo Dye Intermediate 70815-07-5; 4-Hydroxy-3-[[2-hydroxy-5-[(4-chlorophenyl)carbonylamino]phenyl]azo]-6,7-naphthalenedisulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our production of 6-Amino-5-[[5-[(4-Chlorobenzoyl)Amino]-2-Sulfophenyl]Azo]-4-Hydroxy-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 compliance with customer specifications. Certificates of Analysis (COA) detailing all critical parameters are provided with each shipment to guarantee traceability and quality assurance for our global B2B clients.

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	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 5.0%

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