Description

8-[(2,4-Dihydroxyphenyl)Azo]-5-[[4'-[(2,4-Dihydroxyphenyl)Azo]-3,3'-Dimethoxy[1,1'-Biphenyl]-4-Yl]Azo]Naphthalene-2-Sulfonic Acid Sodium Salt is a high-purity, synthetic azo dye intermediate known for its complex polyazo structure and sulfonic acid functionality. This compound is critical for producing vivid and stable colorants, particularly in applications requiring strong chromophore properties and water solubility. It is primarily sought by manufacturers in the dyes and pigments industry for creating specialized azo dyes used in textiles, inks, and advanced materials.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance polyazo dyes, especially for textile fibers like cotton, wool, and nylon.
• Specialty Ink Formulations: Used in the production of colorants for inks in packaging, security printing, and digital applications.
• Functional Dyes for Advanced Materials: Potential applications in the development of dyes for non-textile uses, such as in optical data storage or liquid crystal displays (LCDs).
• Research & Development: Employed in chemical research for studying azo coupling reactions and developing novel chromophores with specific light-absorption properties.
• Laboratory Reagent: Used as a standard or reference compound in analytical chemistry for dye identification and quality control processes.

Basic Information

Product Name	8-[(2,4-Dihydroxyphenyl)Azo]-5-[[4'-[(2,4-Dihydroxyphenyl)Azo]-3,3'-Dimethoxy[1,1'-Biphenyl]-4-Yl]Azo]Naphthalene-2-Sulfonic Acid Sodium Salt
CAS No.	6360-50-5
Molecular Formula	C42H28N6O10S · xNa
Molecular Weight	Contact for details
Synonyms	Direct Brown 1; C.I. 30045; Azo Brown 1; Sodium 8-[(2,4-dihydroxyphenyl)azo]-5-[[4'-[(2,4-dihydroxyphenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]naphthalene-2-sulfonate; 1-Naphthalenesulfonic acid, 8-[(2,4-dihydroxyphenyl)azo]-5-[[4'-[(2,4-dihydroxyphenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-, sodium salt; Polyazo dye intermediate; Direct Brown 1 sodium salt
EINECS	228-873-7

Quality Control

Our production of this azo dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques like HPLC and spectrophotometry to verify identity and strength. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Soluble, clear solution

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