chlorofluorocarbons


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chlorofluorocarbons

A range of compounds, composed of chlorine, fluorine, carbon and hydrogen, used as aerosol propellants and refrigerants. CFCs have become discredited because of their effect on the ozone layer.

chlorofluorocarbons (CFCs)

greenhouse gases. Compounds which contain chlorine, fluorine and carbon often together with hydrogen, used for the manufacture of solvents, aerosols, refrigerants and plastic foams; they cause ozone depletion in the stratosphere and absorb long-wave radiation.
References in periodicals archive ?
Some of them are afforestation, selective deforestation, reduced release of carbon dioxide and other greenhouse gases by cutting down our use of chlorofluorocarbons, using catalytic converters in our cars and minimizing the combustion of fossil fuels that is actually shifting to renewable energy resources from non-renewable ones which is important to balance the ecosystem.
An anisotropic distribution of electron density in chlorofluorocarbons (CFCs), make them suitable lewis base acceptors.
However, the specified test to verify conformance (D2042, Test Method for Solubility of Asphalt Materials in Trichloroethylene) is now rarely used because trichloroethylene is a chlorofluorocarbon (CFC) banned by the Kyoto treaty.
Group I (chlorofluorocarbons 11, 12, 113, 114 and 115) for essential medical use: 155,460 kg weighted according to the ozone-depleting potential
These contain gases such as Chlorofluorocarbons (CFCs) and HCFCs, used for the coolant and insulation.
The recovery and destruction of chlorofluorocarbons (CFC) from car air conditioner units have become compulsory in Japan from Tuesday under a new CFC recovery and destruction law.
When it became known that chlorofluorocarbons and hydrochlorofluorocarbons in refrigerants were contributing to depletion of the earth's protective ozone layer, NIST began a program (funded by the Department of Energy's Office of Basic Energy Sciences and Office of Building Technologies) to measure the properties of their replacements.
The heater uses carbon dioxide as a refrigerant instead of chlorofluorocarbons, which are commonly used in such devises.
Environmental advancements include air conditioning systems with no HCFCs (hydrogenated chlorofluorocarbons); photovoltaic panels; use of environmentally sensitive building materials; a monitoring system for indoor air quality; energy efficient lighting; water conserving plumbing fixtures; chutes for paper and wet trash; and energy efficient low "e" glass to filter out unwanted ultraviolet and near-infrared light to minimize heat loss or gain.
Since the banning of the chlorofluorocarbons once used as propellants in the aerosol cans that dispense anything from shaving cream to deodorant, manufacturers have switched to natural gases like butane and propane.
* phase out chlorofluorocarbons (CFCs) and similar compounds;
The compounds contained chlorine and fluorine atoms attached to a carbon skeleton (chlorofluorocarbons) and seemed absolutely safe.