The preparation methods of sulfur hexafluoride are divided into two categories, one is direct method, the other is electrolysis method.

In the preparation process, keep the container stable at 120 ° c to 180 ° c. The molten sulfur can be prepared by reacting with fluorine gas. However, the amount of fluorine gas needs to be kept so as not to produce by-products. This method is the most common method at home and abroad. In addition to heating to facilitate the reaction, there are also ways to pronounce SF4 and UF6 using ultraviolet radiation and prepare sulfur hexafluoride.

At present, the preparation of industrial SF6 is usually made by electrolysis of fluorine and sulfur at high temperature. Among them, SF6 containing carbon disulfide can be obtained by electrolysis in the presence of anhydrous hydrogen fluoride and strong conductive solute such as sodium fluoride, but this method will waste a lot of electric energy.