49744-39-0

Basic information

• Product Name: 3,3'-dichloro[1,1'-biphenyl]-4,4'-bis(diazonium) dichloride
• Synonyms: 3,3'-dichloro[1,1'-biphenyl]-4,4'-bis(diazonium) dichloride;3,3'-Dichlorobiphenyl-4,4'-didiazonium·dichloride
• CAS NO: 49744-39-0
• Molecular Formula: C₁₂H₆Cl₂N₄*2Cl
• Molecular Weight: 348.01484
• EINECS: 256-462-0
• Mol File: 49744-39-0.mol
• Article Data: 3

Chemical Properties

• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: g/cm³
• CAS DataBase Reference: 3,3'-dichloro[1,1'-biphenyl]-4,4'-bis(diazonium) dichloride(CAS DataBase Reference)
• NIST Chemistry Reference: 3,3'-dichloro[1,1'-biphenyl]-4,4'-bis(diazonium) dichloride(49744-39-0)
• EPA Substance Registry System: 3,3'-dichloro[1,1'-biphenyl]-4,4'-bis(diazonium) dichloride(49744-39-0)

Safety Data

• Hazardous Substances Data: 49744-39-0(Hazardous Substances Data)

Usage

General Description

3,3'-dichloro[1,1'-biphenyl]-4,4'-bis(diazonium) dichloride is a chemical compound that is used in the production of dyes. It is a diazonium salt, which means it contains a diazonium group (N2+) that is capable of undergoing various chemical reactions, particularly for the synthesis of azo dyes. 3,3'-dichloro[1,1'-biphenyl]-4,4'-bis(diazonium) dichloride is commonly used in the textile industry for coloring fabrics, as well as in the production of printing inks and paints. As a diazonium salt, it is highly reactive and must be handled with caution due to its potential explosive nature. It is an important intermediate in the manufacturing of various azo dyes, which are widely used in the textile and printing industries.

Upstream product

• 91-94-1 3,3'-dichlorobenzidine HCl 
• 91-94-1 3,3'-dichlorobenzidine 

Downstream Products

• 97794-07-5 C_.I_. pigment yellow 12 

Relevant articles and documents

Production process and system for insoluble azo pigments

An insoluble azo pigment is produced by ejecting a diazo solution and a grounding solution continuously into an ejector such that within the ejector, the diazo solution and grounding solution are mixed with each other and are subjected to a coupling reaction. A production system for the insoluble azo pigment includes the following units (1) to (4): (1) a first feed tank (2) for a first fluid selected from the diazo solution or grounding solution, a first flow path (a) for feeding the first fluid to nozzles of an ejector (1), and a pump (d) for feeding the first fluid through the first flow path; (2) the ejector (1) provided with the nozzles, a suction chamber, a diffuser, and a temperature control device (g); (3) a second feed tank (3) for a second fluid, a second flow path (b) for guiding the second fluid into the suction chamber, and a flow control device (e) for controlling a flow rate of the second fluid through the second flowpath (b); and (4) a heat treatment tank (5) for subjecting to heat treatment a suspension of the insoluble azo pigment formed by a reaction between the first fluid and the second fluid, and a third flow path (a′) for guiding the suspension from the diffuser to the heat treatment tank.

Process for the preparation of pigment compositions

Preparation of stabilized pigment compositions, comprising mixing a water-miscible quaternary ammonium compound of formula III wherein R1, R2, R3 and R4 independently of each other stand for C1-C22aklyl, C2-C22alkenyl, benzyl, pyridyl, quinolyl, isoquinolyl or polyoxyalkylenyl, and X? is an anion, a water-immiscible organic solvent and a pigment.