124-73-2

Basic information

• Product Name: 1,2-Dibromotetrafluoroethane
• Synonyms: (CF2Br)2;1,2-Dibrom-1,1,2,2-tetrafluorethan;1,2-Dibromo tetrafluoro methane;1,2-dibromo-1,1,2,2-tetrafluoro-ethan;1,2-Dibromoperfluoroethane;1,2-dibromotetrafluoro-ethan;1,2-Dibromperfluorethan;1,2-Dibromtetrafluorethan
• CAS NO: 124-73-2
• Molecular Formula: C₂Br₂F₄
• Molecular Weight: 259.82
• EINECS: 204-711-9
• Product Categories: Industrial/Fine Chemicals;CFC;refrigerants
• Mol File: 124-73-2.mol
• Article Data: 25

Chemical Properties

• Melting Point: -110,5°C
• Boiling Point: 47,3°C
• Flash Point: -16.445 °C
• Appearance: clear liquid with an aromatic odour
• Density: 2,175 g/cm3
• Vapor Pressure: 315mmHg at 25°C
• Refractive Index: 1.347
• Stability: Stable.
• CAS DataBase Reference: 1,2-Dibromotetrafluoroethane(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-Dibromotetrafluoroethane(124-73-2)
• EPA Substance Registry System: 1,2-Dibromotetrafluoroethane(124-73-2)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38-59-36/38
• Safety Statements: 26-36-61
• RIDADR: 3082
• HazardClass: 6.1(b)
• PackingGroup: III
• Hazardous Substances Data: 124-73-2(Hazardous Substances Data)

Usage

Chemical Properties

clear liquid with an aromatic odour

Purification Methods

Wash it with water, then with weak alkali. Dry with CaCl2 or H2SO4 and distil it. [Locke et al. J Am Chem Soc 56 1726 1934.] Also purify it by gas chromatography on a silicone DC-200 column.

InChI:InChI=1/C2Br2F4/c3-1(5,6)2(4,7)8

Upstream product

• 116-14-3 polytetrafluoroethylene 
• 380305-63-5 potassium trifluoroethen-1-yltrifluoroborate 
• 75-61-6 dibromodifluoromethane 
• 353-59-3 halon-1211 
• 50733-66-9 dimethyl perfluoro-(2-methyl-3-oxa-hexane-1,6-dioate) 
• 428-59-1 Hexafluoropropene oxide 
• 2154-59-8 difluoro-methylene 
• 7726-95-6 bromine 
• 127-21-9 1,3-dichloro-1,1,3,3-tetrafluoro-propan-2-one 
• 679-13-0 perfluorosuccinic difluoride 
• 151-67-7 1,1,1-trifluoro-2-bromo-2-chloroethane 
• 28882-09-9 bromodifluoromethyl 
• 115-25-3 Octafluorocyclobutane 
• 354-33-6 1,1,1,2,2-pentafluoroethane 

Downstream Products

• 18599-21-8 1,6-dibromo-1,1,2,2-tetrafluoro-hexane 
• 18599-20-7 1,4-dibromo-1,1,2,2-tetrafluorobutane 
• 335-56-8 1-bromo-1,1,2,2,3,3,4,4,5,5,6,6,6-tridecafluorohexane 
• 375-48-4 nonafluoro-1-bromobutane 
• 335-48-8 1,4-dibromo-1,1,2,2,3,3,4,4-octafluoro-butane 
• 558-91-8 1-bromo-1H-undecafluoro-pentane 
• 375-88-2 1-bromopentadecafluoroheptane 
• 355-42-0 tetradecafluorohexane 
• 35523-39-8 heptafluorobenzyl bromide 
• 53106-74-4 perfluorobenzyl phenyl ether 
• 53106-75-5 1-(2-Bromo-1,1,2,2-tetrafluoro-ethoxy)-2,3,4,5,6-pentafluoro-benzene 
• 558-57-6 1,2-dibromo-1,1-dichloro-2,2-difluoroethane 
• 666-19-3 1,2-dibromo-1-chloro-2-fluoro-ethene 
• 2561-54-8 1-bromo-2,2-dichloro-1-fluoro-ethene 

Related news

Condensation of 1,2-Dibromotetrafluoroethane (cas 124-73-2) with various potassium thiophenoxides and phenoxides09/28/2019

BrCF2CF2Br reacts easily with various potassium thiophenoxides and phenoxides to give respectively 2-bromo tetrafluoroethyl thioethers and ethers. The lipophilicity of C6H5SCF2CF2Br and C6H5OCF2CF2Br is measured and compared with that of the well known C6H5SCF2CF2H and C6H5OCF2CF2H.detailed

Polyfluoroalkylation of 2,6-di-tert-butylphenol by 1,2-Dibromotetrafluoroethane (cas 124-73-2) activated by sulfur dioxide10/01/2019

It was shown that it was possible to perform fluoroalkylation of both sterically-hindered phenolates and phenols with the use of 2,6-di-tert-butylphenol as an example. The role of sulfur dioxide as an activator of the interaction process was established.detailed

Preliminary NoteAddition of 1,2-Dibromotetrafluoroethane (cas 124-73-2) to alkynes by means of a redox system09/27/2019

The addition of 1,2-dibromotetrafluoroethane (1) to various terminal alkynes (2a – 2j) was performed in DMF with a redox system (NH4)2S2O8/HCO2Na·2H2O at 40°C. The products (3) were 1:1 adducts reductively debrominated under the reaction conditions, with the E isomers in predominance, and wer...detailed

Selective fluoroalkylation of thiophenols by 1,2-Dibromotetrafluoroethane (cas 124-73-2) activated by sulfur dioxide09/24/2019

Treatment of 1,2-dibromotetrafluoroethane with thiophenols in DMF in the presence of sulfur dioxide and pyridines having pKa > 5 gives fluoroalkylated thioethers in high yields under mild conditions. The influence of thiophenol reactant structure and medium basicity is discussed.detailed

Chain reaction on de-halogenation of 1,2-Dibromotetrafluoroethane (cas 124-73-2) and 1,1,2-trichlorotrifluoroethane induced by irradiation in alcohols09/10/2019

Methanol and 2-propanol solutions of 1,2-dibromotetrafluoroethane and 1,1,2-trichlorotrifluoroethane were irradiated with γ-rays after perfect de-oxygenation. The product, formed by the substitution of one of the bromine or chlorine atoms with a hydrogen atom, was observed by radiation-induced ...detailed

Radiation-induced debromonation of 1,2-Dibromotetrafluoroethane (cas 124-73-2) (Halon2402) in alcohols followed by Br2•− formation – A pulse radiolysis study09/09/2019

Pulse radiolysis technique was used to investigate early stages of radiation-induced reactions in alcohols (methanol and 2-propanol) containing a halogenated compound, Halon2402, and it was found that repetition of irradiation leads to accumulation of a transient species having absorption around...detailed

Relevant articles and documents

CO2 laser induced IRMPD of 2-bromo-2-chloro-1,1,1 -trifluoroethane: Time-resolved luminescence studies

The IRMPD of 2-bromo-2-chloro-1,1,1-trifluoroethane gives rise to an intense visible light emission between 350 and 750 nm due to various carbenes. The effect of various experimental parameters such as laser energy, pulse duration and substrate pressure on the emission has been studied. Infrared fluorescence studies have also been carried out to explore the vibrational excitation of the photoproducts. A self-consistent mechanism is proposed explaining the complex photodissociation dynamics of the system.

Synthesis of a sun-shaped amphiphilic copolymer consisting of a cyclic perfluorocyclobutyl aryl ether-based backbone and lateral PMAA side chains

A novel amphiphilic sun-shaped copolymer, c-PMBTFVB-g-PMAA (MBTFVB: 2-methyl-1,4-bistrifluorovinyloxybenzene, MAA: methacrylic acid) containing a cyclic perfluorocyclobutyl (PFCB) aryl ether-based backbone and PMAA lateral side chains with narrow molecular weight distribution (Mw/Mn ≤ 1.38), was synthesized via the site transformation strategy. First, a PMBTFVB linear precursor was prepared by thermal step-growth cycloaddition polymerization of MBTFVB trifluorovinyl monomer. After the end functionalization of the linear precursor with alkyne, Glaser coupling reaction was performed to produce c-PMBTFVB cyclic homopolymer. The pendant methyls on PFCB aryl ether-based backbone were then converted to Br-containing ATRP initiating groups by a mono-bromination reaction with N-bromosuccinimide (NBS) and benzoyl peroxide (BPO) to give c-PMBTFVB-Br cyclic macroinitiator without affecting the main chain, where the density of ATRP initiation groups could be tuned from 33% to 58% by varying the feeding ratio of NBS to the pendant methyl. Subsequently, c-PMBTFVB-g-PMAA sun-shaped amphiphilic copolymers with hydrophilic PMAA side chains were synthesized by ATRP of tert-butyl methacrylate (tBMA) initiated by c-PMBTFVB-Br, followed by the selective hydrolysis of hydrophobic PtBMA segment into hydrophilic PMAA segment using CF3COOH. The obtained c-PMBTFVB cyclic homopolymer and its precursor were well characterized by GPC, NMR, and DSC and all the observations indicated a high efficiency of the intra-macromolecular cyclization via Glaser coupling reaction. The critical micelle concentrations of the obtained amphiphilic copolymers were determined by fluorescence probe technique and the morphologies of the formed micelles were investigated by TEM. This journal is

A novel fluorine-containing graft copolymer bearing perfluorocyclobutyl aryl ether-based backbone and poly(methyl methacrylate) side chains

A series of novel graft copolymers consisting of perfluorocyclobutyl aryl ether-based backbone and poly(methyl methacrylate) side chains were synthesized by the combination of thermal [2π + 2π] step-growth cycloaddition polymerization of aryl bistrifluorovinyl ether monomer and atom transfer radical polymerization (ATRP) of methyl methacrylate. A new aryl bistrifluorovinyl ether monomer, 2-methyl-1,4-bistrifluorovinyloxybenzene, was first synthesized in two steps from commercially available reagents, and this monomer was homopolymerized in diphenyl ether to provide the corresponding perfluorocyclobutyl aryl ether-based homopolymer with methoxyl end groups. The fluoropolymer was then converted to ATRP macroinitiator by the monobromination of the pendant methyls with N-bromosuccinimide and benzoyl peroxide. The grafting-from strategy was finally used to obtain the novel poly(2-methyl-1,4- bistrifluorovinyloxybenzene)-g-poly(methyl methacrylate) graft copolymers with relatively narrow molecular weight distributions (Mw/Mn ≤ 1.46) via ATRP of methyl methacrylate at 50 °C in anisole initiated by the Br-containing macroinitiator using CuBr/dHbpy as catalytic system. These fluorine-containing graft copolymers can dissolve in most organic solvents. This is the first example of the graft copolymer possessing perfluorocyclobutyl aryl ether-based backbone. Copyright

Synthesis method of tetrafluoropropyl trifluoroethylene ether

The invention relates to a preparation method of tetrafluoropropyl trifluoroethylene ether. The preparation method comprises the following main steps: in an alkaline environment, under the condition of heating, carrying out substitution and elimination on tetrafluoropropanol and 1,2-dibromo-1,1,2-trifluoroethane to obtain the tetrafluoropropyl trifluoroethylene ether. Compared with the existing reaction, the method provided by the invention has the advantages of simple reaction type, mild reaction conditions, strong operability, no use of organic solvents, environmental protection, fast reaction rate and high product yield, overcomes the difficulty of using metallic sodium and organic solvents in the prior art, reduces the reaction risk, and is suitable for industrial production.