fluoroform

Fluoroform, also known as trifluoromethane, is a colorless, odorless gas at room temperature and pressure. Its chemical formula is CHF3, a methane derivative in which three hydrogen atoms are replaced by fluorine atoms. It is nonflammable and relatively inert under ordinary conditions, though highly dense compared with air.

Production and uses: It is produced commercially as a byproduct in the manufacture of other fluorinated compounds and refrigerants. Historically, trifluoromethane has been used as a refrigerant (designated R-23) and as a blowing agent in polyurethane foams; more recently, its use has declined due to environmental concerns and regulatory restrictions. In some industrial settings, CHF3 is employed as a reactive gas in plasma processing of semiconductors.

Environmental impact: Fluorinated greenhouse gas with very high global warming potential (GWP), commonly cited around 14,000 to 15,000 over 100 years, and an atmospheric lifetime of decades to centuries. It is controlled under international agreements and national regulations due to contributions to climate change. Emissions are minimized through containment, recovery, and destruction technologies.

Safety: As a gas, it can act as an asphyxiant in poorly ventilated areas; it is not known to be acutely toxic at typical exposure levels. Appropriate handling includes storage in sealed cylinders, proper ventilation, and adherence to safety data sheets.