Description

6-[(2,4-diaminophenyl)azo]-3-[[4-[[4-[[7-[(2,4-diaminophenyl)azo]-1-hydroxy-3-sulpho-2-naphthyl]azo]phenyl]amino]-3-sulphophenyl]azo]-4-hydroxynaphthalene-2-sulphonic acid, lithium sodium salt is a high-purity, complex azo dye intermediate essential for producing vibrant and durable colorants. This compound matters for its role in synthesizing specialized dyes with excellent lightfastness and washfastness properties, meeting stringent performance criteria. It is primarily needed by manufacturers in the textile, leather, and specialty ink industries seeking reliable, high-performance color components for their formulations.

Application

• Textile Dyeing: A key intermediate for the synthesis of high-grade, washfast direct dyes and reactive dyes for cotton, wool, and nylon.
• Leather Coloring: Used in the production of dyes for imparting deep, uniform colors to leather goods with good adhesion.
• Specialty Inks: Serves as a precursor for pigments and dyes used in high-performance inks for packaging and security printing.
• Paper Coloring: Employed in the manufacture of dyes for high-quality paper products requiring specific color shades.
• Research & Development: A valuable chemical for R&D laboratories focusing on novel dye synthesis and color chemistry.
• Industrial Colorants: Used in the production of colorants for plastics, coatings, and other industrial materials where specific color properties are required.

Basic Information

Product Name	6-[(2,4-diaminophenyl)azo]-3-[[4-[[4-[[7-[(2,4-diaminophenyl)azo]-1-hydroxy-3-sulpho-2-naphthyl]azo]phenyl]amino]-3-sulphophenyl]azo]-4-hydroxynaphthalene-2-sulphonic acid, lithium sodium salt
CAS No.	83221-69-6
Molecular Formula	C44H30LiN12NaO14S4
Molecular Weight	~1140.0 g/mol (Contact for exact details)
Synonyms	Direct Black 22, Lithium Sodium Salt; C.I. 35435; Azo Black Dye Intermediate; 6-[(2,4-Diaminophenyl)diazenyl]-3-[[4-[[4-[[7-[(2,4-diaminophenyl)diazenyl]-1-hydroxy-3-sulfo-2-naphthyl]diazenyl]phenyl]amino]-3-sulfophenyl]diazenyl]-4-hydroxynaphthalene-2-sulfonic acid, lithium sodium salt; Black 22 Li/Na Salt; Complex Azo Dye Salt; Tetrakisazo Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to rigorous quality testing protocols to ensure batch-to-batch consistency and compliance with industry standards. Each lot is analyzed for critical parameters including purity, heavy metal content, and impurity profile. Certificates of Analysis (COA) detailing all test results are available upon request to support your quality assurance and regulatory 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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue 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 (as Pb)	Max. 20 ppm
Solubility (Water)	Soluble

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