Description

Sodium 6-Amino-5-[[4-(Benzoylamino)Phenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate. This compound is valued for its role in synthesizing specific, high-performance dyes and pigments, offering excellent color properties and structural stability. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing colorants with precise shade and fastness characteristics.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of acid dyes and direct dyes used for coloring nylon, silk, wool, and paper.
• Textile Industry: Used in the production of dyes for textile fibers, contributing to vibrant colors with good wash and light fastness.
• Ink Manufacturing: Serves as a precursor for pigments and dyes used in printing inks, including inks for packaging and specialty printing.
• Leather Dyeing: Employed in the formulation of dyes for leather products, providing deep, uniform coloration.
• Research & Development: Used in chemical research labs for developing new chromophores and studying azo coupling reactions.
• Specialty Chemical Synthesis: Acts as an intermediate for more complex chemical entities in pharmaceutical and agrochemical research.

Basic Information

Product Name	Sodium 6-Amino-5-[[4-(Benzoylamino)Phenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	67875-13-2
Molecular Formula	C23H17N4NaO5S
Molecular Weight	484.46 g/mol
Synonyms	6-Amino-5-[[4-(benzoylamino)phenyl]azo]-4-hydroxy-2-naphthalenesulfonic acid sodium salt; C.I. 18050; Acid Orange 156; Sodium 6-amino-4-hydroxy-5-[(4-(phenylcarbonylamino)phenyl]azo]-2-naphthalenesulfonate; Benzenesulfonic acid, 6-amino-5-[[4-(benzoylamino)phenyl]azo]-4-hydroxy-, sodium salt; Azo dye intermediate 67875-13-2
EINECS	Contact for details

Quality Control

Our Sodium 6-Amino-5-[[4-(Benzoylamino)Phenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and solubility are available upon request to support your quality assurance protocols.

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). Keep away from incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Solubility (Water)	Freely soluble
Loss on Drying	≤ 2.0%
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.