Trifluoromethane has great room for development in the electronics industry, and the by-product production method has good prospects.

Trifluoromethane, whose chemical formula is CHF3, is also called fluoroform. It appears as a colorless gas and is almost odorless. Trifluoromethane is stable in nature, soluble in water, and soluble in some organic solvents such as acetone, anhydrous ether, methanol, etc. It is non-conductive and non-flammable, but it can be thermally decomposed under high temperature conditions, and the decomposition product is toxic hydrogen fluoride gas.

According to the “2021-2025 In-depth Market Research and Investment Strategy Suggestions Report on Trifluoromethane Industry” released by the Industrial Research Center, three Fluoromethane is a fluorinated alkane (HFC), also known as HFC-23. Since its ozone depletion potential (ODP) is zero, it can replace chlorofluorocarbons (CFC) such as CFC-13 as a low-temperature refrigerant. Extinguishing agent. Trifluoromethane can also be used as a supercritical extraction solvent and an organic synthesis intermediate to produce products such as tetrafluoroethylene. In the electronics industry, trifluoromethane can be used as a plasma chemical etchant with fast speed and excellent selectivity in etching silicon dioxide films.

In overseas markets, the main manufacturers of trifluoromethane include Air Liquide of France, Linde Group of Germany, Merck Group of Germany, Praxair of the United States, and Air Products of the United States. (Air Products), Japan’s Showa Denko, Japan’s Kanto Denka Kogyo, South Korea’s SK Materials, etc.; in the Chinese market, the main trifluoromethane manufacturers include Suzhou Jinhong Gas Co., Ltd., Guangdong Huate Gas Co., Ltd., etc.

my country’s trifluoromethane manufacturers mainly include two categories: professional gas companies and fluorochemical companies. An important way to produce trifluoromethane is the purification of by-products in the fluorochemical industry, which is prepared from difluorochloromethane R-22 (CHClF2) The by-products in the process are raw materials, which are produced through distillation and other processes. Although trifluoromethane does not destroy the ozone layer, it has a high global warming potential (GWP) and is a strong greenhouse gas.

On September 15, 2021, the “Kigali Amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer” officially came into effect in our country. The General Office of the Ministry of Ecology and Environment issued the “Notice on Controlling Emissions of By-product Trifluoromethane”. By-product trifluoromethane (HFC-23) in the production process of methyl chloride (HCFC-22) or hydrofluorocarbons (HFCs) shall not be directly discharged; except for use as raw materials and controlled purposes, by-product HFC-23 shall be Destroy and dispose of as much as possible using destruction technologies approved by the Conference of the Parties.

Industry analysts said that compared with foreign companies, domestic trifluoromethane manufacturers are weaker in the production of high-purity products. The demand for electronic grade trifluoromethane is highly dependent on external sources. In the production process of R-22, the by-product trifluoromethane is produced in a large amount, and trifluoromethane has high utilization value. If it is directly destroyed and disposed of, it will not only waste resources, but also be detrimental to the company’s ability to increase revenue. Therefore, the by-product recycling and reuse prospects good. But what our country lacks is electronic-grade trifluoromethane. How to purify the by-product trifluoromethane with low cost and high efficiency to obtain electronic-grade trifluoromethane is the focus of the future development of the industry.