Description

Tetralithium 4-amino-6-[[4-[2-[4-[(2,4-diaminophenyl)azo]-2-sulphonatophenyl]vinyl]-3-sulphonatophenyl]azo]-5-hydroxy-3-[(4-nitrophenyl)azo]naphthalene-2,7-disulphonate is a high-purity, multi-sulfonated azo dye intermediate of significant industrial importance. Its complex polyazo structure provides exceptional chromophoric strength and binding affinity, making it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vivid, colorfast, and chemically resistant colorants.

Application

• Textile Dyeing: Primary application as a key intermediate for the synthesis of reactive, direct, and acid dyes for cotton, wool, silk, and nylon.
• Inkjet Inks: Used in the production of high-quality, water-soluble dyes for industrial and photographic inkjet printing, offering excellent color gamut and stability.
• Specialty Pigments: Serves as a precursor for creating complex, high-performance organic pigments used in automotive paints, plastics, and artist colors.
• Paper Coloring: Employed in the manufacture of dyes for high-grade paper and cardboard, providing strong, bleed-resistant coloration.
• Biological Staining: Potential use in the synthesis of specialized stains for histological and cytological applications in laboratory diagnostics.
• Liquid Crystal Display (LCD) Color Filters: Investigated for use in creating precise colorants for LCD and other display technologies.

Basic Information

Product Name	Tetralithium 4-amino-6-[[4-[2-[4-[(2,4-diaminophenyl)azo]-2-sulphonatophenyl]vinyl]-3-sulphonatophenyl]azo]-5-hydroxy-3-[(4-nitrophenyl)azo]naphthalene-2,7-disulphonate
CAS No.	94386-25-1
Molecular Formula	C40H20Li4N10O16S4
Molecular Weight	Contact for details
Synonyms	Tetralithium 4-amino-6-{[4-{2-[4-((2,4-diaminophenyl)azo)-2-sulfophenyl]ethenyl}-3-sulfophenyl]azo}-5-hydroxy-3-[(4-nitrophenyl)azo]naphthalene-2,7-disulfonate; C.I. Direct Black 166 (Lithium Salt); Tetralithium salt of a polyazo dye intermediate; Acid Black 210 (Lithium Salt, tentative); 4-Amino-6-[[4-[2-[4-[(2,4-diaminophenyl)azo]-2-sulfophenyl]vinyl]-3-sulfophenyl]azo]-5-hydroxy-3-[(4-nitrophenyl)azo]naphthalene-2,7-disulfonic acid tetralithium salt; Polyazo dye intermediate, lithium salt
EINECS	Contact for details

Quality Control

Our tetralithium azo dye intermediate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. A detailed Certificate of Analysis (COA) is provided with each shipment, guaranteeing consistent quality, batch-to-batch reproducibility, and supply chain reliability for your critical production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (typical)
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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