Description

Disodium 2-[(7-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]Benzoate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its core value lies in its role as a critical precursor for synthesizing vibrant and stable dyes and pigments, particularly in the red and violet color spectra. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries who require consistent quality and reliable supply for their production processes.

Application

• Primary Dye Intermediate: Key building block for the synthesis of acid dyes, direct dyes, and reactive dyes used in textile coloring.
• Ink Manufacturing: Used in the production of colorants for inks in packaging, printing, and writing applications.
• Specialty Pigments: Serves as a precursor for creating high-performance pigments used in plastics, paints, and coatings.
• Research & Development: Utilized in chemical research for developing novel chromophores and studying azo dye chemistry.
• Biological Staining: Potential use in the formulation of histological stains for laboratory and diagnostic purposes.

Basic Information

Item	Detail
Product Name	Disodium 2-[(7-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]Benzoate
CAS No.	66214-42-4
Molecular Formula	C17H11N3Na2O7S
Molecular Weight	447.33 g/mol
Synonyms	Acid Red 337; C.I. 17200; 7-Amino-4-hydroxy-3-[(2-sulfophenyl)azo]naphthalene-2-sulfonic acid, disodium salt; Benzoic acid, 2-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-, disodium salt; Disodium 7-amino-4-hydroxy-3-[(2-sulfophenyl)azo]naphthalene-2-sulfonate; Azo dye intermediate 66214-42-4
EINECS	Contact for details

Quality Control

Our production of Disodium 2-[(7-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]Benzoate adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. The material is subjected to rigorous analytical testing, including HPLC for assay and impurity profiling. Certificates of Analysis (COA) documenting identity, purity, and other critical parameters are available for every batch to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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	Dark red to violet powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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