Description

3-[[8-[(Ethoxycarbonyl)Amino]-2-Hydroxy-1-Naphthalenyl]Azo]-2-Hydroxy-5-Nitrobenzenesulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex molecular structure, featuring a naphthalene core linked to a nitrobenzenesulfonic acid group, makes it a critical precursor for synthesizing specialized dyes and pigments. This compound is primarily sought by manufacturers in the colorant industry requiring precise chromophores for demanding applications.

Application

• Primary intermediate for the synthesis of high-performance azo dyes and pigments.
• Key chromophore component in the production of textile dyes, particularly for cotton and other cellulosic fibers.
• Used in the formulation of specialized inks for industrial printing and packaging.
• Precursor for biological stains and histochemical dyes used in laboratory diagnostics.
• Potential use in the research and development of functional dyes for optical applications.
• Intermediate for colorants used in the paper and leather processing industries.

Basic Information

Product Name	3-[[8-[(Ethoxycarbonyl)Amino]-2-Hydroxy-1-Naphthalenyl]Azo]-2-Hydroxy-5-Nitrobenzenesulfonic Acid Sodium Salt
CAS No.	71873-53-5
Molecular Formula	C20H15N4O9SNa
Molecular Weight	510.41 g/mol
Synonyms	Sodium 3-[(8-ethoxycarbonylamino-2-hydroxy-1-naphthyl)azo]-2-hydroxy-5-nitrobenzenesulfonate; 3-[(8-[(Ethoxycarbonyl)amino]-2-hydroxy-1-naphthalenyl)azo]-2-hydroxy-5-nitrobenzenesulfonic acid sodium salt; Benzenesulfonic acid, 3-[[8-[(ethoxycarbonyl)amino]-2-hydroxy-1-naphthalenyl]azo]-2-hydroxy-5-nitro-, sodium salt; Azo dye intermediate 71873-53-5; C.I. Azoic Coupling Component (related); Sodium salt of a naphthol AS-based azo dye acid
EINECS	Contact for details

Quality Control

Our production of this azo intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high chemical purity. Every lot is analyzed using advanced techniques like HPLC to verify identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment to support your quality assurance processes.

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 strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Orange to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (Water)	Soluble

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