Description

1-Naphthalenesulfonic Acid, 3,3'-[(3,3'-Dimethoxy[1,1'- Biphenyl]-4,4'-Diyl)Bis(Azo)]Bis[4-Hydroxy-, Dilithium Salt is a specialized, high-purity azo dye intermediate. This compound is valued for its role in synthesizing complex, high-performance dyes and pigments with excellent color properties and stability. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing vivid and durable colorants.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a critical building block in the synthesis of high-grade, metal-complex azo dyes, particularly for textile fibers like nylon and wool.
• Specialty Ink Formulations: Used in the production of inks for jet printing, security printing, and other applications requiring precise color fidelity and lightfastness.
• Functional Dyes for Polymers: Employed in the coloration of engineering plastics and synthetic fibers where thermal stability and color consistency are paramount.
• Research & Development: Utilized in chemical R&D for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Analytical Reagents: Can be used as a standard or reagent in analytical methods for dye identification and quantification.

Basic Information

Product Name	1-Naphthalenesulfonic Acid, 3,3'-[(3,3'-Dimethoxy[1,1'- Biphenyl]-4,4'-Diyl)Bis(Azo)]Bis[4-Hydroxy-, Dilithium Salt
CAS No.	75673-34-6
Molecular Formula	C34H22Li2N4O10S2
Molecular Weight	708.61 g/mol
Synonyms	Direct Blue 106, Lithium Salt; C.I. 51315; 3,3'-[(3,3'-Dimethoxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4-hydroxy-1-naphthalenesulfonic acid] dilithium salt; Dilithium 4-hydroxy-3-[[4'-[(2-hydroxy-1-naphthyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-1-naphthalenesulfonate; Azo Dye Intermediate 75673-34-6; C.I. Direct Blue 106 (Lithium salt form); 1-Naphthalenesulfonic acid, 4-hydroxy-3-((4-((2-hydroxy-1-naphthalenyl)azo)-3-methoxyphenyl)azo)-, lithium salt (1:2)
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high chemical purity. Each lot is analyzed using advanced techniques like HPLC and spectrophotometry to verify identity, strength, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance processes.

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 tightly sealed after each use to prevent degradation from atmospheric moisture.

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	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Partially soluble, forms colloidal solution

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