Trichlorofluoromethane, also called freon-11, CFC-11, or R-11, is a chlorofluorocarbon (CFC). It is a colorless, faintly ethereal, and sweetish-smelling liquid that boils around room temperature. [5] CFC-11 is a Class 1 ozone-depleting substance which damages Earth's protective stratospheric ozone layer. [6]

2021年12月2日 · Trichloromethane, also known as CFC-11, made headlines in 2018 when scientists alerted us of an unexpected increase in global CFC-11 emissions. Unexpected, because CFC-11 has been banned since 2010, as it was one of the gases that was causing the hole in the ozone layer.

Five years after an unexpected spike in emissions of the banned ozone-depleting chemical chlorofluorocarbon CFC-11, emissions dropped sharply between 2018 and 2019, new analyses of global air measurements show.

Since 1977 five different sampling programs within The Halocarbons and other Atmospheric Trace Species (HATS) group have measured chlorofluorocarbon-11 (CFC-11). These programs include three flask systems and two in situ programs.

2019年7月22日 · Trichlorofluoromethane, also known as CFC-11 and Freon 11, is a refrigerant, aerosol propellant, and foam-blowing agent. It is unusual in that its boiling point is at normal ambient temperature and pressure, so it can be handled as a liquid or gas.

Refrigerant R11 is chlorofluorocarbon (CFC). Among all the refrigerants commonly used for the refrigeration and air conditioning applications, R11 has the highest potential to cause the depletion of the ozone layer from the upper layers of the atmosphere and the greenhouse effect.

2021年2月10日 · An international research team, including scientists from MIT, have observed a global reduction of the banned ozone-depleting chemical CFC-11, after it spiked unexpectedly several years ago.

2021年2月10日 · Here we report an accelerated decline in the global mean CFC-11 concentration during 2019 and 2020, derived from atmospheric concentration measurements at remote sites around the world.

2024年11月5日 · Human Health - water ingestion only Fact Sheet for CFC-11: (Human Health Noncarcinogen - water ingestion only), New York State Department of Environmental Conservation (pdf) (11.29 KB) Trichlorofluoromethane summary of …

Trichlorofluoromethane. Cl3CF. Synonyms: CFC-11, Fluorotrichloromethane, Freon<SUP>&#174;</SUP> 11. CAS 75-69-4. Molecular Weight 137.37. Browse Trichlorofluoromethane and related products at MilliporeSigma.