Description

Tetrasodium 3,3'-[(3,3'-Dimethoxy[1,1'-Biphenyl]-4,4'-Diyl)Bis(Azo)]Bis[4,5-Dihydroxynaphthalene-2,7-Disulphonate] is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for synthesizing high-performance dyes and pigments, particularly those requiring excellent lightfastness and color strength. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vivid, durable colors.

Application

• Primary Dye Intermediate: Serves as a crucial building block for the synthesis of direct, reactive, and acid dyes, especially for cotton, wool, and nylon.
• Textile Industry: Used in the production of dyes for coloring fabrics, providing deep shades with good wash and light fastness.
• Ink Manufacturing: A key component in formulating high-quality printing inks for packaging and publications.
• Specialty Coatings: Employed in the creation of colored paints and coatings for industrial applications.
• Biological Staining: Potential use as a histological stain or in the development of diagnostic reagents due to its chromophoric structure.
• Research & Development: Utilized in chemical research for developing new chromophores and studying azo dye chemistry.

Basic Information

Product Name	Tetrasodium 3,3'-[(3,3'-Dimethoxy[1,1'-Biphenyl]-4,4'-Diyl)Bis(Azo)]Bis[4,5-Dihydroxynaphthalene-2,7-Disulphonate]
CAS No.	4198-19-0
Molecular Formula	C40H24N4Na4O18S4
Molecular Weight	1032.8 g/mol
Synonyms	Direct Blue 1, Tetrasodium Salt; Azo Blue 1; C.I. 24410; Pontamine Blue 4BX; 3,3'-[(3,3'-Dimethoxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4,5-dihydroxy-2,7-naphthalenedisulfonic acid] tetrasodium salt; Benzenesulfonic acid, 3,3'-[(3,3'-dimethoxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4,5-dihydroxy-, tetrasodium salt; Direct Blue 4BX
EINECS	224-077-1

Quality Control

Our production of Tetrasodium 3,3'-[(3,3'-Dimethoxy[1,1'-Biphenyl]-4,4'-Diyl)Bis(Azo)]Bis[4,5-Dihydroxynaphthalene-2,7-Disulphonate] adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. All materials undergo rigorous analytical testing, including HPLC for assay and impurity profiling, to meet precise customer specifications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and physical parameters is provided with every shipment.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and handling properties.

Specification

Item	Specification
Appearance	Dark Blue to Bluish-Black Powder
Identification (IR)	Conforms to Standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely Soluble

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