Description

7-[(3-Aminobenzoyl)Amino]-3-[[4-[(2-Chloro-4-Sodiosulfophenyl)Azo]-3-Methylphenyl]Azo]-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex molecular structure is engineered to provide excellent chromophoric properties and binding affinity, making it a critical precursor for the synthesis of specialized dyes and pigments. This compound is primarily sought by manufacturers in the textile, leather, and specialty ink industries for producing vivid and durable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance, polyazo direct dyes and acid dyes for textiles like cotton, wool, and nylon.
• Leather Dyeing: Used in the formulation of dyes that provide deep, uniform coloration and good fastness properties on leather goods.
• Specialty Ink Production: Employed in the manufacture of inks for applications requiring specific solubility and color strength, such as ink-jet and security inks.
• Paper Coloring: Acts as a component in dyes for high-grade paper and paperboard where color consistency is critical.
• Biological Staining: Potential use as a precursor for histochemical stains and indicators in laboratory settings, owing to its chromogenic azo groups.
• Research & Development: Utilized in chemical research for developing new chromophores and studying azo coupling reactions and dye properties.

Basic Information

Product Name	7-[(3-Aminobenzoyl)Amino]-3-[[4-[(2-Chloro-4-Sodiosulfophenyl)Azo]-3-Methylphenyl]Azo]-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium Salt
CAS No.	5873-28-9
Molecular Formula	C30H21ClN6Na2O8S2
Molecular Weight	763.09 g/mol
Synonyms	Acid Red 299; C.I. 18130; Sodium 7-[(3-aminobenzoyl)amino]-3-[[4-[(2-chloro-4-sulfophenyl)azo]-3-methylphenyl]azo]-4-hydroxy-2-naphthalenesulfonate; 2-Naphthalenesulfonic acid, 7-[(3-aminobenzoyl)amino]-3-[[4-[(2-chloro-4-sulfophenyl)azo]-3-methylphenyl]azo]-4-hydroxy-, disodium salt; C.I. Acid Red 299; Disodium 7-[(3-aminobenzoyl)amino]-3-[[4-[(2-chloro-4-sulfophenyl)azo]-3-methylphenyl]azo]-4-hydroxynaphthalene-2-sulfonate
EINECS	Contact for details

Quality Control

Our production of 7-[(3-Aminobenzoyl)Amino]-3-[[4-[(2-Chloro-4-Sodiosulfophenyl)Azo]-3-Methylphenyl]Azo]-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium Salt adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity for industrial applications. Every lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling. Certificates of Analysis (COA) detailing purity, identity, and key physical parameters are provided to guarantee the material meets your specific technical requirements.

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 each use to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
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.