Description

Tetralithium 3,3'-[(3,3'-Dimethoxy[1,1'-Biphenyl]-4,4'-Diyl)Bis(Azo)]Bis[5-Amino-4-Hydroxynaphthalene-2,7-Disulphonate] is a high-purity, water-soluble lithium salt of a complex bis-azo dye intermediate. This compound matters for its role as a critical precursor in the synthesis of specialized dyes and pigments, offering excellent solubility and batch-to-batch consistency. Industrial manufacturers in the textile, ink, and specialty chemical sectors require it for producing high-value colorants with specific fastness and hue properties.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the manufacture of high-performance, water-soluble azo dyes for textiles and inks.
• Specialty Ink Formulations: Used in the production of inks for jet printing, security printing, and other applications requiring precise color characteristics.
• Research & Development: Employed in chemical R&D for synthesizing novel chromophores and functional dyes with specific optical properties.
• Analytical Reagents: Can be utilized as a staining agent or a complexometric indicator in specific analytical chemistry procedures.
• Functional Material Synthesis: Potential use as a monomer or additive in the development of advanced materials, such as light-harvesting complexes or sensors.

Basic Information

Item	Details
Product Name	Tetralithium 3,3'-[(3,3'-Dimethoxy[1,1'-Biphenyl]-4,4'-Diyl)Bis(Azo)]Bis[5-Amino-4-Hydroxynaphthalene-2,7-Disulphonate]
CAS No.	71550-22-6
Molecular Formula	C40H22Li4N6O16S4
Molecular Weight	Contact for details
Synonyms	Lithium Salt of Direct Black 19; Tetralithium Direct Black 19; C.I. 35255; 3,3'-[(3,3'-Dimethoxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino-4-hydroxynaphthalene-2,7-disulfonic acid] tetralithium salt; Direct Black 19, lithium salt; Azo Black Lithium Salt; Tetralithium 3,3'-[(3,3'-dimethoxy-4,4'-biphenylylene)bis(azo)]bis(5-amino-4-hydroxy-2,7-naphthalenedisulfonate)
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for color strength, and elemental analysis, to ensure it meets precise customer specifications. A detailed Certificate of Analysis (COA) documenting identity, purity, and impurity profiles is provided with each shipment.

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). This product is hygroscopic (moisture-sensitive); ensure the container is sealed immediately after use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to black powder or crystalline solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution at 1% w/v

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