Description

5-Amino-3-[[4-[2-[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-2-sulfophenyl]ethenyl]-3-sulfophenyl]azo]-4-hydroxy-2,7-naphthalenedisulfonic acid pentalithium salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex, multi-sulfonated structure provides excellent solubility and binding properties, making it a critical precursor for the synthesis of specialized dyes and pigments. This compound is primarily sought by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant, wash-fast colors.

Application

• Textile Dye Synthesis: A key intermediate for manufacturing high-grade, fiber-reactive dyes for cotton, wool, and nylon, valued for their brightness and colorfastness.
• Inkjet Ink Formulation: Used in the production of specialized pigments for high-performance inkjet inks, contributing to superior color gamut and stability.
• Liquid Crystal Display (LCD) Color Filters: Serves as a precursor for dyes used in color filters for LCD screens, requiring high purity and precise chromaticity.
• Biological Staining Reagents: Potential use in the synthesis of histological stains for microscopy, leveraging its chromophoric azo groups.
• Analytical Chemistry Indicators: Can be utilized to develop pH or metal ion indicators due to its color-changing azo structure.
• Research & Development: Employed in academic and industrial R&D for exploring novel organic chromophores and functional materials.

Basic Information

Item	Detail
Product Name	5-Amino-3-[[4-[2-[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-2-sulfophenyl]ethenyl]-3-sulfophenyl]azo]-4-hydroxy-2,7-naphthalenedisulfonic acid pentalithium salt
CAS No.	72453-59-9
Molecular Formula	C34H18Li5N6O19S6
Molecular Weight	Contact for details
Synonyms	Lithium Salt of C.I. Direct Blue 199; Direct Blue 199 Lithium Salt; 5-Amino-4-hydroxy-3-[[4-[2-[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-2-sulfophenyl]vinyl]-3-sulfophenyl]azo]-2,7-naphthalenedisulfonic acid, pentalithium salt; C.I. 74190; Pentalithium 5-amino-3-((4-(2-(4-((7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo)-2-sulphophenyl)vinyl)-3-sulphophenyl)azo)-4-hydroxy-2,7-naphthalenedisulphonate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems. Every batch is subjected to rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet the exacting standards of our industrial partners. Certificates of Analysis (COA) documenting key parameters such as assay, impurity profile, and heavy metal content are provided with each shipment to guarantee traceability and compliance.

Storage

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

Specification

Item	Specification
Appearance	Dark blue to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
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.