Description

6-[(2,4-Diaminophenyl)Azo]-3-[[3-[3-[3-[(2,4-Diaminophenyl)Azo]Phenyl]Ureido]Phenyl]Azo]-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium Salt is a high-purity, complex azo dye intermediate essential for producing specialized colorants with specific performance characteristics. Its value lies in its ability to impart deep, stable shades and its role as a key building block in synthesizing advanced dyes and pigments. This compound is primarily needed by manufacturers in the textile dyeing, leather finishing, and specialty ink formulation industries, where precise color chemistry is critical.

Application

• Primary Intermediate for Textile Dyes: Used in the synthesis of high-grade, wash-fast azo dyes for cotton, wool, and synthetic fibers.
• Leather Colorant Production: Serves as a key component in formulating durable and vibrant dyes for leather finishing and processing.
• Specialty Ink Manufacturing: Employed in the production of high-performance inks for niche applications requiring specific color properties.
• Research & Development: Utilized in chemical R&D for developing novel chromophores and studying azo dye chemistry and properties.
• Pigment Synthesis: Acts as a precursor in the manufacture of certain complex organic pigments.
• Analytical Chemistry: May be used as a reagent or standard in analytical methods for dye identification and quantification.

Basic Information

Product Name	6-[(2,4-Diaminophenyl)Azo]-3-[[3-[3-[3-[(2,4-Diaminophenyl)Azo]Phenyl]Ureido]Phenyl]Azo]-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium Salt
CAS No.	6449-82-7
Molecular Formula	C39H30N12O6SNa
Molecular Weight	817.79 g/mol
Synonyms	Direct Brown 1:2; C.I. 30045; Sodium 4-hydroxy-3-[[3-[[3-[(2,4-diaminophenyl)azo]phenyl]carbamoylamino]phenyl]azo]-6-[(2,4-diaminophenyl)azo]naphthalene-2-sulphonate; 4-Hydroxy-3-((3-((3-((2,4-diaminophenyl)azo)phenyl)carbamoyl)phenyl)azo)-6-((2,4-diaminophenyl)azo)naphthalene-2-sulfonic acid sodium salt; Azo dye intermediate 6449-82-7; Bis-azo dye sodium salt; 6-[(2,4-Diaminophenyl)diazenyl]-3-[[3-[3-[3-[(2,4-diaminophenyl)diazenyl]phenyl]ureido]phenyl]diazenyl]-4-hydroxynaphthalene-2-sulfonic acid sodium salt
EINECS	229-238-6

Quality Control

Our production of this azo dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. Quality is verified through advanced analytical techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, 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, and well-ventilated area at 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	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Water Content (Karl Fischer)	≤ 4.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in Water)	Complete, clear solution

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