Description

4-[[4-[[4-[(8-amino-2-hydroxy-6-sulpho-1-naphthyl)azo]-5-methoxy-o-tolyl]azo]-6-sulpho-1-naphthyl]azo]-5-hydroxynaphthalene-2,7-disulphonic acid, potassium sodium salt is a high-purity, multi-sulfonated azo dye intermediate known for its excellent chromophore properties and water solubility. This compound is critical for producing vivid, wash-fast, and light-stable dyes and pigments, particularly in the textile and specialty ink sectors. It is primarily sought by manufacturers in the dye and pigment industry, as well as research institutions developing advanced colorants for technical applications.

Application

• Primary Textile Dye Synthesis: A key intermediate for manufacturing high-performance acid dyes and reactive dyes for wool, silk, and nylon.
• Specialty Ink Production: Used in formulating inks for inkjet printing, security inks, and other high-value printing applications requiring precise color and stability.
• Pigment Manufacturing: Serves as a precursor for creating lake pigments and other insoluble colorants used in plastics and coatings.
• Research & Development: Employed in academic and industrial R&D for synthesizing novel chromophores and studying azo dye chemistry.
• Biological Staining: Potential use in the development of histological stains and diagnostic dyes due to its specific chromogenic structure.
• Functional Material Development: Investigated for use in advanced materials such as dye-sensitized solar cells (DSSCs) and optical sensors.

Basic Information

Product Name	4-[[4-[[4-[(8-amino-2-hydroxy-6-sulpho-1-naphthyl)azo]-5-methoxy-o-tolyl]azo]-6-sulpho-1-naphthyl]azo]-5-hydroxynaphthalene-2,7-disulphonic acid, potassium sodium salt
CAS No.	83221-46-9
Molecular Formula	C44H28KN6NaO17S4 (Contact for exact isomer details)
Molecular Weight	~1129.0 g/mol (Contact for exact value)
Synonyms	Acid Black 210; C.I. 300310; Potassium sodium 4-[[4-[[4-[(8-amino-2-hydroxy-6-sulfo-1-naphthyl)azo]-5-methoxy-o-tolyl]azo]-6-sulfo-1-naphthyl]azo]-5-hydroxynaphthalene-2,7-disulfonate; 5-Hydroxynaphthalene-2,7-disulfonic acid, 4-[[4-[[4-[(8-amino-2-hydroxy-6-sulfo-1-naphthyl)azo]-5-methoxy-o-tolyl]azo]-6-sulfo-1-naphthyl]azo]-, potassium sodium salt; Azo dye intermediate for Acid Black 210; Tetrasulfonated tris-azo dye intermediate.
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analysis including HPLC for purity, spectrophotometry for color strength, and elemental analysis. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay, impurity profile, and heavy metal content to meet the stringent requirements of industrial dye synthesis.

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 performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
Sulfated Ash	Contact for details

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