375-45-1

Usage

Flammability and Explosibility

Nonflammable

Upstream product

• 75-09-2 dichloromethane 
• 354-61-0 1,2-dichloro-1,2,2-trifluoro-1-iodoethane 
• 598-88-9 1,2-dichloro-1,2-difluoroethene 
• 392-45-0 1,1,2,3,4,4-hexafluorobutane 
• 375-43-9 1,2,3,4-tetrafluoro-1,1,2,3,4,4-hexachlorobutane 
• 360-89-4 octafluoro-2-butene 
• 141603-17-0 1-Chloro-1-iodoperfluoroheptane 
• 376-42-1 3,4-dichloro-hexafluoro-adipic acid 
• 7782-50-5 chlorine 
• 7732-18-5 water 
• 108-24-7 acetic anhydride 
• 685-63-2 hexafluoro-1,3-butadiene 
• 35380-72-4 cis,cis-1,2,3,4-tetrachloro-1,3-butadiene 
• 677-67-8 fluorosulfonyldifluoroacetyl fluoride 

Downstream Products

• 685-63-2 hexafluoro-1,3-butadiene 
• 20972-44-5 (E)-1,4-dichloro-1,1,2,3,4,4-hexafluorobut-2-ene 
• 17997-56-7 1,1,2,3,4,4-hexafluoro-but-2-ene 
• 142764-88-3 (Z)-1,4-dichloro-1,1,2,3,4,4-hexafluorobut-2-ene 

Relevant academic research and scientific papers

Preparation method of hexafluorobutadiene

The invention relates to a preparation method of hexafluorobutadiene, and belongs to the technical field of fluorine-containing gas preparation. The preparation method comprises the following steps: preparing a polar base solution, activated zinc and 1,2-dichloro2iodo-1,1,2-trifluoroethane, further preparing 1,2,3,4-tetrachlorohexafluorobutane, and finally preparing hexafluorobutadiene. Accordingto the method, activated zinc is used in the preparation process and is matched with a polar base solution serving as a solvent, so that the reaction rate is increased, the yield and selectivity of 1,2,3,4-tetrachlorohexafluorobutane are guaranteed; therefore, the problem that the reaction rate is influenced by using zinc particles which are not activated and have larger particles and adopting a solvent with poorer polarity in the prior art is solved; in addition, a non-polar solvent and activated zinc are added in the preparation of hexafluorobutadiene, so that byproducts generated in the preparation process of hexafluorobutadiene are easier to separate while the yield and selectivity of hexafluorobutadiene are ensured.

METHOD AND APPARATUS FOR PRODUCING FLUORINE-CONTAINING ORGANIC COMPOUND

Provided is a method for producing a fluorine-containing organic compound. The method can immediately detect the occurrence of a side reaction in direct fluorination reaction using fluorine gas and can give a highly pure fluorine-containing organic compound at a high yield. A raw material liquid (1) containing a raw material organic compound having a hydrogen atom and two or more carbon atoms is reacted with fluorine gas in a reaction container (11) to replace the hydrogen atom of the raw material organic compound with a fluorine atom to give a fluorine-containing organic compound. In the reaction, tetrafluoromethane contained in a gas phase (2) in the reaction container (11) is continuously measured, and the amount of the fluorine gas supplied to the reaction container (11) is controlled depending on the measured value of the tetrafluoromethane.

Synthesis method of halogenated butene

The invention discloses a synthesis method of halogenated butene. The method comprises: (1) carrying out a fluorination reaction on hexachlorobutadiene and a fluorination reagent, and purifying the obtained reaction product to obtain fluorochlorobutane; and (2) carrying out a dehalogenation reaction on the fluorochlorobutane and a dehalogenation reagent in a first solvent, and purifying the obtained reaction product to obtain the halogenated butene. The method has the advantages of simple process, less three wastes, high yield, low cost and the like.

Method for preparing 1,2,3,4-tetrachlorohexafluorobutane

The invention discloses a method for preparing 1,2,3,4-tetrachlorohexafluorobutane. 1,2-dichloro-2-iodo-1,1,2-trifluoroethane and metallic zinc which are used as raw materials undergo a ball milling process under the catalysis of ethyl acetate to obtain the 1,2,3,4-tetrachlorohexafluorobutane. The preparation method provided by the invention has the advantages of greenness, high efficiency and fewthree wastes, and is mainly used for preparing the 1,2,3,4-tetrachlorohexafluorobutane.

Method for preparing hexafluorobutadiene from iodine and chlorine

The invention relates to a method for preparing hexafluorobutadiene from iodine and chlorine. The method comprises the following steps: preparing a metal coordinated ionic liquid solvent, and reacting iodine with chlorine to prepare iodine monochloride; reacting iodine monochloride with chlorotrifluoroethylene in the presence of the metal coordinated ionic liquid solvent to prepare 1,2-dichloro-2-iodo-1,1,2-trifluoroethane; carrying out a reaction on the 1,2-dichloro-2-iodo-1,1,2-trifluoroethane in the presence of the metal coordinated ionic liquid solvent under the catalysis of zinc powder to obtain 1,2,3,4-tetrachloro-1,1,2,3,4,4-hexafluorobutane; and reacting the 1,2,3,4-tetrachloro-1,1,2,3,4,4-hexafluorobutane with zinc powder in the presence of the metal coordinated ionic liquid solvent to generate hexafluorobutadiene.

PROCESSES FOR THE SYNTHESIS OF 1,2,3,4-TETRACHLORO-HEXAFLUORO-BUTANE

The present invention relates to processes for the manufacture of 1,2,3,4-tetrachloro-hexafluoro-butane in a nnicroreactor.

PRODUCTION PROCESS AND PURIFICATION PROCESS FOR 1,2,3,4-TETRACHLOROHEXAFLUOROBUTANE

It is an object of the present invention to provide a process for producing 1,2,3,4-tetrachlorohexafluorobutane industrially inexpensively and efficiently by utilizing expensive fluorine gas efficiently and to provide a process which is capable of stably producing 1,2,3,4-tetrachlorohexafluorobutane and in which, by carrying out fluorination reaction at a low temperature, side reactions such as formation of a low-boiling substance due to cleavage of C—C bonds and formation of an excess fluoride are difficult to occur. The process for producing 1,2,3,4-tetrachlorohexafluorobutane of the present invention is characterized in that it includes feeding fluorine gas to 1,2,3,4-tetrachlorobutane using plural reactors in the presence of a solvent and in the absence of a catalyst to allow the 1,2,3,4-tetrachlorobutane and the fluorine gas to react with each other, wherein a part or all of unreacted fluorine gas discharged from one reactor is introduced into a reactor different from said one reactor.

PROCESS FOR PRODUCING 1,2,3,4-TETRACHLOROHEXAFLUOROBUTANE

The present invention provides a process for producing 1,2,3,4-tetrachlorohexafluorobutane having a high purity at a low cost industrially and efficiently. The process for producing 1,2,3,4-tetrachlorohexafluorobutane according to the present invention comprises a step of allowing 1,2,3,4-tetrachlorobutane to react with a fluorine gas to prepare a reaction product containing 1,2,3,4-tetrachlorohexafluorobutane and hydrogen-containing compounds as an impurity, and a step of introducing the reaction product into single or plural distillation columns and distilling to separate the hydrogen-containing compounds from the reaction product and thereby preparing purified 1,2,3,4-tetrachlorohexafluorobutane wherein the at least one of distillation columns has a theoretical plate number of 15 or more.

PROCESS FOR PRODUCING FLUORINE-CONTAINING COMPOUND

The process for producing a fluorine-containing compound such as 1,2,3,4-tetrachclorohexafluorobutane of the present invention is characterized in that a halogenated hydrocarbon compound such as 1,2,3,4-tetrachlorobutane is brought into contact with fluorine gas in a liquid phase or in a solid-liquid coexistence state in the absence of a solvent and a catalyst. According to the present invention, a fluorine-containing compound is readily produced from a halogenated hydrocarbon compound using neither a reaction solvent nor a reaction catalyst.

PRODUCTION PROCESS FOR CHLORINE-CONTAINING FLUORINE-CONTAINING COMPOUND

The production process of the present invention for a chlorine-containing fluorine-containing compound is characterized in that a reaction of adding chlorine atoms to a carbon-carbon unsaturated bond of a hydrogen-containing compound having a carbon-carbon unsaturated bond is carried out under the presence of a fluorine gas. The hydrogen-containing compound having a carbon-carbon unsaturated bond may be 3,4-dichlorobutene-1. Further, the present invention provides a process for producing efficiently and economically 1,2,3,4-tetrachlorohexafluorobutane from 3,4-dichlorobutene-1 described above. According to the present invention, chlorination and fluorination of the hydrogen-containing compound having a carbon-carbon unsaturated bond are carried out in a single step, and therefore a chlorine-containing fluorine-containing compound can be more economically produced at a higher yield than in a conventional process in which two reactions are individually carried out.