Description

4-Hydroxy-6-[(2,4-Dihydroxyphenyl)Azo]-3-[[4-[3-[4-[(2,4-Dihydroxyphenyl)Azo]Phenyl]Ureido]Phenyl]Azo]Naphthalene-2-Sulfonic Acid Sodium Salt is a high-purity, synthetic azo dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple azo and phenolic groups, makes it a critical precursor for producing specialized dyes and pigments with enhanced color fastness and specific optical properties. This compound is essential for manufacturers in the textile, leather, and specialty ink industries seeking to develop high-performance colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-grade, complex azo dyes for textiles (cotton, wool, silk) and leather.
• Specialty Pigment Production: Used in the manufacture of pigments for automotive paints, industrial coatings, and plastics requiring specific shade and stability.
• Functional Dye Synthesis: A precursor for dyes used in non-textile applications such as lasers, optical data storage, and liquid crystal displays (LCDs).
• Biological Staining Agent: Potential use in the development of histological stains for microscopy due to its chromophoric structure.
• Research & Development: Employed in chemical research for studying azo coupling reactions and developing novel chromophores.
• Analytical Reagent: Can be utilized as a colorimetric reagent or indicator in specific analytical chemistry methods.

Basic Information

Product Name	4-Hydroxy-6-[(2,4-Dihydroxyphenyl)Azo]-3-[[4-[3-[4-[(2,4-Dihydroxyphenyl)Azo]Phenyl]Ureido]Phenyl]Azo]Naphthalene-2-Sulfonic Acid Sodium Salt
CAS No.	6856-10-6
Molecular Formula	C39H26N8O10S · xNa
Molecular Weight	Contact for details
Synonyms	Acid Red 299 (related class); C.I. 18130; Sodium 4-hydroxy-6-[(2,4-dihydroxyphenyl)azo]-3-[[4-[3-[4-[(2,4-dihydroxyphenyl)azo]phenyl]ureido]phenyl]azo]naphthalene-2-sulfonate; Bis(2,4-dihydroxyazobenzene-4'-yl) urea derivative; Azo dye intermediate 6856-10-6; 2-Naphthalenesulfonic acid, 4-hydroxy-6-[(2,4-dihydroxyphenyl)azo]-3-[[4-[[[4-[(2,4-dihydroxyphenyl)azo]phenyl]amino]carbonyl]amino]phenyl]azo]-, sodium salt
EINECS	Contact for details

Quality Control

Our production of 4-Hydroxy-6-[(2,4-Dihydroxyphenyl)Azo]-3-[[4-[3-[4-[(2,4-Dihydroxyphenyl)Azo]Phenyl]Ureido]Phenyl]Azo]Naphthalene-2-Sulfonic Acid Sodium Salt adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, chemical identity, and performance. Certificates of Analysis (COA) detailing key specifications such as assay, impurity profile, and physical properties are provided to guarantee traceability and compliance with your technical requirements.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm
Related Substances (HPLC)	Individual impurity: Max. 1.0% Total impurities: Max. 3.0%
Solubility	Soluble in water, alkaline solutions

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