375-34-8

Usage

Uses

Used in Chemical Industry:
HEXAFLUORO-2,2,3,3-TETRACHLOROBUTANE is used as a solvent for its ability to dissolve a wide range of substances, facilitating various chemical reactions and processes.
Used in Foam Production:
HEXAFLUORO-2,2,3,3-TETRACHLOROBUTANE is utilized as a blowing agent in the creation of foams, contributing to the production of lightweight materials with specific properties required by the industry.
Used in Refrigeration Systems:
In certain applications, HEXAFLUORO-2,2,3,3-TETRACHLOROBUTANE serves as a refrigerant, taking advantage of its chemical properties to maintain low temperatures in cooling systems.
It is crucial to handle HEXAFLUORO-2,2,3,3-TETRACHLOROBUTANE with care due to its potential hazards. If ingested or inhaled, it can be harmful, and it may cause skin and eye irritation upon contact. Adequate safety measures are essential when working with HEXAFLUORO-2,2,3,3-TETRACHLOROBUTANE to mitigate these risks.

InChI:InChI=1/C4Cl4F6/c5-1(6,3(9,10)11)2(7,8)4(12,13)14

Upstream product

• 354-58-5 1,1,1-Trichloro-2,2,2-trifluoroethane 
• 303-04-8 2,3-dichloro-1,1,1,4,4,4-hexafluoro-2-butene 
• 400-43-1 2-chloro-1,1,1,4,4,4-hexafluorobutane 
• 79-35-6 1,1'-dichloro-2,2'-difluoroethene 
• 692-50-2 hexafluoro-2-butyne 
• 306-83-2 1,1,1-trifluoro-2,2-dichloroethane 
• 7782-50-5 chlorine 
• 7732-18-5 water 
• 75-88-7 1,1,1-trifluoro-2-chloroethane 
• 7736-43-8 trans-2-chloro-1,1,1,4,4,4-hexafluorobutene-2 
• 375-31-5 heptachloro-1,1,1-trifluoro-butane 

Downstream Products

• 303-04-8 2,3-dichloro-1,1,1,4,4,4-hexafluoro-2-butene 
• 692-50-2 hexafluoro-2-butyne 
• 335-44-4 heptafluoro-2,3,3-trichlorobutane 

Relevant academic research and scientific papers

Method for preparing 1,1,1,4,4,4-hexafluoro-2-butene

The invention relates to a method for preparing 1,1,1,4,4,4-hexafluoro-2-butene. The method for preparing the 1,1,1,4,4,4-hexafluoro-2-butene comprises the following steps: (1) carrying out a reactionon 1,1,1-trifluorochloroethane and/or 1,1,1-trifluoro-2,2-dichloroethane used as raw materials in lights by using chlorine as a catalyst to generate 1,1,1,4,4,4,4-hexafluoro-2,2,3,3-tetrachlorobutane; (2) dechlorinating the 1,1,1,4,4,4,4-hexafluoro-2,2,3,3-tetrachlorobutane obtained in step (1) with zinc powder to prepare 1,1,1,4,4,4-hexafluoro-2,3-dichlorobutene; and (3) reacting the 1,1,1,4,4,4-hexafluoro-2,3-dichlorobutene obtained in step (2) with hydrogen in the presence of a hydrogenation catalyst to obtain the 1,1,1,4,4,4-hexafluoro-2-butene. The method has the advantages of easily available catalyst and raw materials, production of the final product from the above intermediate in multiple paths, and high yield.

PROCESS OF CHLORINATING HYDROCHLOROFLUOROOLEFIN TO PRODUCE CHLOROFLUOROOLEFIN

The present disclosure provides a process for the preparation of chlorofluoroolefin. The process involves chlorinating a hydrochlorofluoroolefin of the formula R1CH=CCIR2 to produce a product mixture comprising a chlorofluoroolefin of the formula R1CCI=CCIR2; wherein R1 and R2 are perfluoroalkyi groups independently selected from the group consisting of CF3, C2F5, n-C3F7, i-C3F7, n-C4F9, i-C4F9 and t- C4Fg.

PROCESS FOR THE PREPARATION OF FLUORINATED CIS-ALKENE

Disclosed is a process for the preparation of fluorine-containing olefins comprising contacting a chlorofluoroalkane with hydrogen in the presence of a catalyst at a temperature sufficient to cause replacement of the chlorine substituents of the chlorofluoroalkane with hydrogen to produce a fluorine-containing olefin. Also disclosed are catalyst compositions for the hydrodechlorination of chlorofluoroalkanes comprising copper metal deposited on a support, and comprising palladium deposited on calcium fluoride, poisoned with lead and reducing the in the presence or absence of a dehydrochlorination catalyst under conditions effective to form a product stream comprising cis-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336).

Process for the (CFC-113a) dimerization

A reductive dimerization process of 1,1,1-trifluoro, 2,2,2-trichloroethane (CFC-113a) with hydrogen, with formation of 1,1,1,4,4,4-hexafluoro-2,2,3,3-tetrachlorobutane and 1,1,1,4,4,4-hexafluoro-2,2-dichlorobutene, and mixtures thereof, wherein the catalyst is constituted by metal ruthenium supported on graphitized carbon obtainable by treatment of the carbon at temperatures higher than 2000° C., in inert gas, or aluminum fluoride having an high surface area.

Photodissociation of 1,1,1-Trifluorodichloroethane at 147 nm. Evidence for Chlorine Atom Reactions

The 147-nm photolysis of CF3CHCl2 has been investigated at 23 deg C as a function of reactant pressure and conversion (It/N), with and without nitric oxide as additive.The principal reaction product is CF2CHF, with lesser yields of CF2CFCl, CF2CHCl, and four chlorofluorobutanes.At constant CF3CHCl2 pressure the observed quantum yields of the olefins decrease with increasing It/N and there is a corresponding increase in the yields of the C4 products.The quantum yields of the olefins also decrease with increasing reactant pressure at the same values of It/N.The addition of NO completely suppresses the formation of the chlorofluorobutanes, but there is a marked increase in the olefin quantum yields.These observations are interpreted in terms of reactions of chlorine atoms which derive, primarily, from the α,α elimination of the elements of (Cl)2 in the primary process.Clorine atoms so produced abstract hydrogen from the parent and add to the product olefins, processes which are the source of haloethyl radicals in the system.Nitric oxide provides an additional and dominant channel for chlorine atom removal by way of their NO-catalyzed recombination which proceeds through CINO as an intermediate.A reaction mechanism consistent with the observations is proposed and, from the functional dependence of the olefin quantum yields on It/N, limiting values have been obtained by extrapolation.The rate constant ratio for hydrogen abstraction from CF3CHCl2 by Cl atoms to Cl addition to CF2CHF was found to be k5/k6 = (2.2 +/- 0.5)*E-4.The extinction coefficient for CF3CHCl2 at 147 nm (296 K) has been determined as ε = (1/PL) ln(I0/It) = 590 +/- 60 atm-1Cm-1.