Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) are fully or partly halogenated hydrocarbons that contain carbon (C), hydrogen (H), chlorine (Cl), and fluorine (F), produced as volatile derivatives of methane, ethane, and propane. The most common example is dichlorodifluoromethane (R-12).

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Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine. They are used in aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants. CFCs are classified as halocarbons, a class of compounds that contain atoms of carbon and halogen atoms.

2023年2月13日 · Carbon dioxide (CO 2) is the most well-known and significant greenhouse gas causing climate change. But there are others, including methane, nitrous oxide—and chlorofluorocarbons (CFCs). CFCs were developed in the late 1920s to replace toxic compounds used in refrigeration and air conditioning; they have also been used in aerosols and as ...

Ozone-depleting compounds that reach the stratospheric ozone layer release free chlorine from their chemical structure and destroy atmospheric ozone by oxidation, thereby destroying its ability to filter ultraviolet radiation.

1999年10月21日 · Chlorofluorocarbons (CFCs) are heavier than air, so how do scientists suppose that these chemicals reach the altitude of the ozone layer to adversely affect it?

2022年10月13日 · Wright-Patterson Air Force Base began the 2022 Combined Federal Campaign season with a kick-off event on Oct. 4 at the USO Center. The 2022 CFC theme is "You Can Be the Face of Change.” The event celebrated contributions and support from federal employees, service members and retirees.

Combined Federal Campaign (CFC) Overseen by OPM, the CFC offers the federal community the opportunity to donate to thousands of participating charities. Every year, federal employees and retirees give thousands of volunteer hours and millions of dollars through the CFC. Together, we make a difference in communities across the US.

Since its inception in 1961, CFC has galvanized federal civilian, military, postal employees, and retirees to commit their support and volunteer hours, shaping a brighter future locally, across the nation, and around the world. Join Our Mission to Save Lives and Shape Futures

We are excited about our participation in the Combined Federal Campaign this year. Federal employees and retirees - look for us in the CFC charity list. Pledging begins in September. Learn more at GiveCFC.org.