Description

2-Naphthalenesulfonic Acid, 5-[[1-Hydroxy-6-(Phenylamino)-3-Sulfo-2-Naphthalenyl]Azo]-8-[[6-Sulfo-4-[(3-Sulfophenyl)Azo]-1-Naphthalenyl]Azo]-, Sodium Salt is a high-purity, complex azo dye intermediate designed for demanding industrial synthesis. This compound is valued for its ability to impart specific color properties and chemical functionality in advanced dye manufacturing. It is primarily required by producers of high-performance dyes and pigments for textiles, inks, and specialty coatings.

Application

• Primary Intermediate for Reactive and Direct Dyes: A key building block in the synthesis of high-value, water-soluble azo dyes for textile dyeing and printing.
• Pigment Manufacturing: Used in the production of organic pigments for applications in inks, plastics, and coatings requiring specific hue and stability.
• Specialty Colorants: Employed in the formulation of specialized colorants for leather, paper, and other industrial materials.
• Research & Development: Serves as a critical reagent in chemical R&D for developing new chromophores and functional dyes.

Basic Information

Product Name	2-Naphthalenesulfonic Acid, 5-[[1-Hydroxy-6-(Phenylamino)-3-Sulfo-2-Naphthalenyl]Azo]-8-[[6-Sulfo-4-[(3-Sulfophenyl)Azo]-1-Naphthalenyl]Azo]-, Sodium Salt
CAS No.	72245-54-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Direct Brown 1:1; Direct Brown 1:1; Direct Brown 1:1, Sodium Salt; 2-Naphthalenesulfonic acid, 5,8-bis[[6-(phenylamino)-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-, sodium salt (1:?); 5,8-Bis[[6-(phenylamino)-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-2-naphthalenesulfonic acid sodium salt; Direct Brown 1:1 (C.I. 30045); C.I. 30045
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Every batch is controlled for identity, purity, and consistency to meet the stringent requirements of dye and pigment synthesis. Certificates of Analysis (COA) documenting key parameters are available upon request.

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.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals	Contact for details

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