91268-70-1

Basic information

• Product Name: (E)-bis(2,4,6-tribromophenyl)diazene
• CAS NO: 91268-70-1
• Molecular Formula: C₁₂H₄Br₆N₂
• Molecular Weight: 655.5976
• Mol File: 91268-70-1.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 589.1°C at 760 mmHg
• Flash Point: 310.1°C
• Density: 2.58g/cm³
• Vapor Pressure: 3.09E-13mmHg at 25°C
• Refractive Index: 1.758
• CAS DataBase Reference: (E)-bis(2,4,6-tribromophenyl)diazene(CAS DataBase Reference)
• NIST Chemistry Reference: (E)-bis(2,4,6-tribromophenyl)diazene(91268-70-1)
• EPA Substance Registry System: (E)-bis(2,4,6-tribromophenyl)diazene(91268-70-1)

Safety Data

• Hazardous Substances Data: 91268-70-1(Hazardous Substances Data)

Usage

Description

(E)-bis(2,4,6-tribromophenyl)diazene, with the chemical formula C12H6N2Br6, is a colorless, odorless solid that is insoluble in water. It is a chemical compound known for its flame retardant properties, making it a valuable component in various industries.

Uses

Used in Plastics Industry:
(E)-bis(2,4,6-tribromophenyl)diazene is used as an additive for enhancing the flame retardancy of plastics. It serves to reduce the flammability of plastic materials by releasing bromine radicals when exposed to heat or flame, which then interrupt the combustion process.
Used in Textile Industry:
In the textile industry, (E)-bis(2,4,6-tribromophenyl)diazene is utilized as a flame retardant to improve the fire resistance of fabrics. This application is particularly important for materials used in public spaces, homes, and other areas where fire safety is a concern.
Used in Furniture Industry:
(E)-bis(2,4,6-tribromophenyl)diazene is also used in the furniture industry to increase the fire safety of upholstered furniture and other products. By incorporating this compound into the materials, manufacturers can reduce the risk of ignition and fire spread, thus providing a safer product for consumers.
However, it is important to note that (E)-bis(2,4,6-tribromophenyl)diazene has been subject to controversy due to potential toxicity and environmental impact concerns. As a result, its use may be regulated or restricted in certain applications or regions.

Upstream product

• 147-82-0 2,4,6-tribromoaniline 

Relevant articles and documents

Conversion of anilines into azobenzenes in acetic acid with perborate and Mo(VI): correlation of reactivities

Azobenzenes are extensively used to dye textiles and leather and by tuning the substituent in the ring, vivid colours are obtained. Here, we report preparation of a large number of azobenzenes in good yield from commercially available anilines using sodium perborate (SPB) and catalytic amount of Na2MoO4 under mild conditions. Glacial acetic acid is the solvent of choice and the aniline to azobenzene conversion is zero, first and first orders with respect to SPB, Na2MoO4 and aniline, respectively. Based on the kinetic orders, UV–visible spectra and cyclic voltammograms, the conversion mechanism has been suggested. The reaction rates of about 50 anilines at 20–50?°C and their energy and entropy of activation conform to the isokinetic or Exner relationship and compensation effect, respectively. However, the reaction rates, deduced by the so far adopted method, fail to comply with the Hammett correlation. The specific reaction rates of molecular anilines, obtained through a modified calculation, conform to the Hammett relationship. Thus, this work presents a convenient inexpensive non-hazardous method of preparation of a larger number of azobenzenes, and shows the requirement of modification in obtaining the true reaction rates of anilines in acetic acid and the validity of Hammett relationship in the conversion process, indicating operation of a common mechanism.

OXIDATION OF AROMATIC AMINES WITH CHROMYL CHLORIDE - I OXYDATION OF AROMATIC PRIMARY AMINES

The oxidation of aromatic primary amines with chromyl chloride in carbon tetrachloride or chloroform, results in the formation of intermediate solid adducts (Etard adducts) which, on hydrolysis, give azobenzenes(1), 1,4-benzoquinones(2), anilino-1,4-benzoquinones(3), 1,4-benzoquinone anils(4) and anilino-1,4-benzoquinone anils(5) in yields which depend on the position, nature and degree of substitution of the ring.