Description

Sodium Hydrogen 5-[[4'-[(7-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Salicylate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple azo linkages and functional groups, makes it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vivid, stable colors with specific technical properties.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-grade, polyazo direct and reactive dyes for cotton and other cellulosic fibers.
• Textile Dye Manufacturing: Used to produce dyes that offer excellent wash-fastness, light-fastness, and bright shades for the textile industry.
• Inkjet and Printing Ink Formulation: Employed in the manufacture of pigments and dyes for high-quality inks, providing superior color strength and stability.
• Specialty Pigment Production: Acts as a precursor for creating complex organic pigments used in plastics, paints, and coatings.
• Research & Development: Utilized in chemical R&D for developing new chromophores and studying structure-property relationships in dye chemistry.
• Leather Dyeing: Can be used in the synthesis of dyes suitable for leather coloring processes.
• Paper Coloring: Applicable in the production of dyes for specialty paper products requiring specific colorants.

Basic Information

Product Name	Sodium Hydrogen 5-[[4'-[(7-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Salicylate
CAS No.	73398-45-5
Molecular Formula	C37H28N6NaO8S
Molecular Weight	739.71 g/mol
Synonyms	5-[[4'-[(7-Amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]salicylic acid, sodium salt; Sodium 5-[(4'-[(7-amino-1-hydroxy-3-sulfonato-2-naphthyl)azo]-3,3'-dimethylbiphenyl-4-yl)azo]salicylate; C.I. Azoic Coupling Component; Azo dye intermediate 73398-45-5; Disazo dye intermediate; Salicylic acid azo derivative, sodium salt
EINECS	Contact for details

Quality Control

Every batch of our Sodium Hydrogen 5-[[4'-[(7-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Salicylate undergoes rigorous quality testing to ensure it meets the stringent requirements of industrial dye synthesis. Our quality assurance protocol includes advanced analytical techniques to verify chemical identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to guarantee traceability and compliance with your internal standards.

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 opening to prevent absorption of atmospheric moisture, which can affect product quality and handling properties. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95.0%
Water Content (KF)	Max. 5.0%
Solubility (1% in Water)	Complete, clear solution
Heavy Metals (as Pb)	Max. 20 ppm
Related Substances (HPLC)	Total impurities: Max. 3.0%
pH (1% Aqueous Solution)	6.0 - 8.0

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