Trichlorofluoromethane

• Trichlorfluorkohlenstoff
• Trichloromonofluoromethane
• Trichlorofluoromethane
• Freon 11, F11
• R11
• CFC-11

Colorless liquid with ethereal odor

Liquid

1.49 g · cm -3 (liquid)

-111 ° C

23.6 ° C

886 hPa ( 20 ° C)

Poorly in water (1.5 g · l -1)

Risk

5700 mg · m-3

4750 (relative to 100 years)

-301.3 KJ / mol

Template: Infobox chemical / molecular formula search available

Trichlorofluoromethane is a CFC, and is used as the refrigerant. Since it is classified as all CFCs as ozone - destructive, it is today more and more replaced by more environmentally friendly materials. In case of contact with flames or hot objects it decomposes, forming highly toxic and corrosive fumes (chlorine, hydrogen chloride, hydrogen fluoride). With metals such as aluminum, barium, calcium, magnesium and sodium, a vigorous reaction takes place.

Until the 1990s, trichlorofluoromethane was as R11 as a propellant, such as for foaming polyurethane, used eg in refrigerators. Since 1995, the material in Germany is prohibited for new installations because it has a high ozone depletion potential as all CFCs and in addition a 4750 -fold higher global warming potential than carbon dioxide.

When heated to high temperatures in soldering, by a spark or the cigarette gas decomposes to toxic compounds such as chlorine (HCl) or hydrogen fluoride (HF).

Concentration at the sea surface in the late 1990s