(VOC): Carbon-containing compounds that evaporate into the air (with a few exceptions). VOCs contribute to the formation of smog and/or may themselves be toxic. VOCs often have an odor, and some examples include gasoline, alcohol, and the solvents used in paints.
Any organic compound which evaporates readily to the atmosphere. VOCs contribute significantly to photochemical smog production and certain health problems.
VOCs are organic compounds composed of hydrogen and carbon. Also called hydrocarbons.
an organic compound that evaporates readily at atmospheric temperatures. A major precursor of ozone
A term that relates to chemicals that are negligibly photochemically reactive.
a solvent that becomes a gas at room temperature
One of several organic chemical compounds characterized by its ability to evaporate readily at normal temperatures. Includes various industrial solvents and degreasers such as TCE, PCE, and carbon tetrachloride.
Organic chemicals and petrochemicals that emit vapors while evaporating. In paints, VOC generally refers to the solvent portion of the paint which, when it evaporates, results in the formation of paint film on the substrate to which it was applied.
The term used to describe the organic gases and vapours that are present in the air. They are believed to be involved in ground-level ozone formation. Some VOCs are toxic air pollutants.
organic compound, typically a liquid, that forms a vapor. Many VOCs are harmful. Specific VOCs, also classified as hazardous air pollutants by the U.S. EPA, of concern when released into the atmosphere from operations at the Valdez Marine Terminal include benzene, toluene, ethylbenzene, and xylene (BTEX).
Organic gasses at room temperature.
Any hydrocarbon (except methane and ethane) which is able to change quickly to a gas. Chlorofluorocarbons (CFCs) are an example.
a carbon based substance which wastes away on exposure to the atmosphere List of Glossary Terms
An organic chemical compound that has the ability to evaporate readily at normal temperatures. Includes various industrial solvents and degreasers such as TCE, PCE, and carbon tetrachloride.
organic gases and vapors that evaporate easily into the air. Released by burning of fossil fuels and evaporation of things like nail polish remover, barbecue fluid and gasoline. They are believed to be involved in the formation of ground-level ozone.
In chemistry, organic means something containing. Volatile means 'easily evaporated' - like water boiling away in a kettle. It can also mean explosive. And a compound is something that is made up of two or more other elements. If you put it all together, then a volatile organic compound is a carbon substance that is made up of two or more elements, is easily evaporated, and may be explosive. (Back to Ozone Action! Days)
A volatile organic compound. Also known as a ROG (reactive organic gas).
carbon containing compounds occurring in ambient air as gases or vapour with boiling points between 50°C and 260°C. The VOCs that participate in smog formation reactions are called reactive organic compounds (ROCs) (e.g. benzene, xylene and toluene)
Hydrocarbon chemicals that evaporate easily and play a role in the creation of ground-level ozone.
The term "Volatile organic compounds" refers to organic compounds that readily evaporate. VOCs include pure hydrocarbons, partially oxidised hydrocarbons, and organic compounds containing chlorine, sulphur or nitrogen. They are widely used as fuels (e.g., propane and gasoline), as paint thinners and solvents, and in the production of plastics. VOC emissions have to be carefully controlled so as not to contribute to air toxicity and urban smog. Xx
Reactive gases released during combustion or evaporation of fuel and regulated by EPA. VOCs react with NOx in the presence of sunlight and form ozone.
Organic compounds which are volatile and react with sunlight to form groundlevel ozone, the main component of smog.
The environmental or legislated definition: Constituents that will evaporate at their temperature of use and which, by a photochemical reaction, will cause atmospheric oxygen to be converted into potential smog-promoting tropospheric ozone under favorable climatic conditions. Some areas classify a substance to be a VOC based on its vapor pressure. Scientific definition: Any hydrocarbon, except methane and ethane, with a vapor pressure equal to or greater than 0.1 mm Hg.
Any organic compound not specifically exempted by the U.S. EPA that participates in atmospheric photochemical reactions. VOCs may be emitted during the application and/or drying of coatings. In calculating the VOC content of the coating, exempt compounds and water are excluded and are not considered to be part of the coating. Exempt compounds are acetone, ethane, methane, carbon monoxide, carbon dioxide, carbonic acid, metallic carbides, metallic carbonates, ammonium carbonate, methylene chloride, 1,1,1 trichloroethane (methyl chloroform), 1,1,2-trichlorolotrifluoroethane (CFC-113), trichlorofluoromethane (CFC-11), dichlorodifluoromethane (CFC-12), dichlorotetrafluoroethane (CFC-114), chloropentafluoroethane (CFC-115), trifluoromethane (CFC-23), and chlorodifluoromethane (CFC-22). Many of these exempt compounds may contribute to upper-atmosphere ozone destruction. Carbon dioxide is considered to be a "greenhouse gas," which may contribute to global warming, and carbon monoxide is a primary pollutant.
(VOC)--Organic chemical that volatilizes (evaporates) relatively easily when exposed to air.
One of a class of chemical compounds; indoor sources include tobacco smoke, building products, furnishings, cleaning materials, solvents, and office supplies. In sufficient quantities, VOCs can cause eye, nose, and throat irritations; dizziness; and headaches. Some VOCs are suspected carcinogens. Data for health effects resulting, from exposure to the characteristically low levels of VOCs in the indoor environment are scarce.
Any organic compound that participates in atmospheric photochemical reactions except those designated by EPA as having negligible photochemical reactivity.
Volatile organic compounds (VOCs) are organic chemical compounds that have high enough vapour pressures under normal conditions to significantly vaporize and enter the atmosphere. (The term VOC is also occasionally used as an abbreviation, especially in biological contexts, for "volatile organic carbon".) A wide range of carbon-based molecules, such as aldehydes, ketones, and hydrocarbons are VOC's.