Description

Tetrasodium 4,4'-[(3,3'-Dichloro[1,1'-Biphenyl]-4,4'-Diyl)Bis(Azo)]Bis[3-Aminonaphthalene-2,7-Disulphonate] is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its value lies in its role as a key precursor for synthesizing high-performance, colorfast dyes and pigments, particularly for demanding technical applications. This compound is essential for manufacturers in the textile, leather, and specialty chemical industries seeking to produce vivid, durable colors with specific functional properties.

Application

This advanced azo dye intermediate serves as a critical building block in the synthesis of complex colorants. Its primary and related applications include:

• Textile Dyeing: As a precursor for dyes used on cotton, wool, nylon, and silk, offering excellent wash and light fastness.
• Leather Coloring: Synthesis of pigments and dyes for high-quality leather finishing.
• Paper Coloring: Manufacturing of dyes for specialty and high-grade paper products.
• Ink Formulation: Production of colorants for inks used in packaging, printing, and security applications.
• Functional Dyes: Research and development of dyes for non-textile uses, such as in optical media, sensors, or liquid crystal displays (LCDs).
• Chemical Synthesis: Serving as a versatile intermediate in organic synthesis for further chemical modifications.

Basic Information

Product Name	Tetrasodium 4,4'-[(3,3'-Dichloro[1,1'-Biphenyl]-4,4'-Diyl)Bis(Azo)]Bis[3-Aminonaphthalene-2,7-Disulphonate]
CAS No.	6548-29-4
Molecular Formula	C40H22Cl2N6Na4O12S4
Molecular Weight	1085.76 g/mol
Synonyms	Direct Blue 14, Tetrasodium Salt; C.I. 23850; 3,3'-Dichlorobenzidine Tetrasulfonate Azo Dye Intermediate; Tetrasodium 3,3'-Dichlorobenzidinedisazo-bis(7-amino-1,3-naphthalenedisulfonate); Azoic Diazo Component 48 (related); Benzenesulfonic acid, 4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-amino-, tetrasodium salt; C.I. Direct Blue 14 (tetrasodium salt form).
EINECS	229-476-2

Quality Control

Our production of Tetrasodium 4,4'-[(3,3'-Dichloro[1,1'-Biphenyl]-4,4'-Diyl)Bis(Azo)]Bis[3-Aminonaphthalene-2,7-Disulphonate] adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure high purity, consistent composition, and batch-to-batch reliability. Comprehensive Certificates of Analysis (COA) detailing purity, impurity profiles, and physical specifications are provided and available upon request 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 room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); therefore, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark blue to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content (KF)	Max. 5.0%
Heavy Metals (as Pb)	Max. 20 ppm
Solubility (in Water)	Freely soluble
pH (1% Solution)	7.0 - 9.0

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