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.

Volatile organic chemical. An organic chemical which can easily dissipate or evaporate into the air.

volatile organic compound. Any organic compound which evaporates readily to the atmosphere. VOCs contribute significantly to photochemical smog production and certain health problems.

volatile organic compound. 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).

Volatile organic compound. A chemical compound which evaporates readily at room temperature and contains carbon.

Volatile organic compound. Any hydrocarbon (except methane and ethane) which is able to change quickly to a gas. Chlorofluorocarbons (CFCs) are an example.

See Volatile Organic Compounds

Volatile organic compounds—air pollutants found in engine exhaust. Ethanol helps reduce VOC emissions by 12 percent.

Volatile organic compound. A highly evaporative, carbon-based chemical substance, which produces noxious fumes; found in many paints, caulks, stains, and adhesives.

volatile organic compound. 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.

Volatile Organic Compounds - A mixture of light-end components of crude oil - methane, ethane, propane, butane, etc. that are released from crude oil during crude oil transfers or transportation. Teekay has planned and built several VOC recovery plants, and is now operating these units on shuttle tankers for oil companies.

Volatile Organic Compound. Any carbon compound that evaporates under standard test conditions. Some authorities limit the amount of volatile organic compounds permitted in paint because of concerns about environmental and health effects.

volatile organic compound. 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)

See volatile organic compound.

Volatile Organic Compounds. organic materials which evaporate at normal temperatures and pressures; organic materials which have vapor pressures greater than 0.1 mm Hg at one atmosphere.

Volatile Oranic compounds

Volatile Organic Compound. A volatile organic compound. Also known as a ROG (reactive organic gas).

Volatile Organic Compound. Synthetic organic compounds which easily vaporize and are often carcinogenic.

Any carbon compound that evaporates under standard test conditions. Essentially, all paint solvents except water are VOCs. Federal and state governments are beginning to limit the amount of volatile organics found in paint because of concerns about possible environmental and health effects.

Volatile Organic Compounds. Emissions from internal combustion and certain industrial processes. Sources include: light-duty vehicles, heavy duty vehicles, off-road mobile, biogenics, stationary sources and area sources.

Volatile organic compounds. A broad group of chemical substances, some of which have detrimental health or environmental effects when emitted to air.

Volatile Organic Compound, any organic matter that is capable of liquefying into a gases matter.

Volatile organic compounds, such as trichloroethylene (TCE).

volatile organic compound. 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)

Volatile Organic Compound Compounds such as carbon tetrachloride, chloroform, and methylene chloride tend to pass into vapor state. If ingested they may be absorbed into the bloodstream and are suspected carcinogens.

Abbreviation for Volatile Organic Compounds. These include various alkanes, alkenes, aromatics, aldehydes, and unspeciated compounds. See Jeffries (1995).

Volatile Organic Compound. 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

Volatile Organic Compounds (e.g., butane, xylene, toluene).

Volatile Organic Contaminants. Organic (carbon based) contaminants present in the atmosphere in the form of gases or vapors.

Volatile Organic Compounds. Chemicals whose presence in the air may mean poor air quality. VOC's are found both in products themselves, as well as propellants that are added to disperse or apply products.

Volatile Organic Compound. Organic chemicals used as solvents, degreasers, fumigants and dry cleaning chemicals. They tend to evaporate readily. Some of these compounds are associated with carcinogenic and chronic toxicity.

Volatile Organic Compounds. Carbon-containing chemical compounds (e.g., solvents and styrene) that evaporate readily at ambient temperatures. Environmental, safety and health regulations often limit exposure to these compounds, so low VOC content is preferable.

Volatile Organic Compound. 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.

Volatile Organic Compounds. A measure of the total amount of organic compounds evaporating from a coating film, excluding water.

Volatile Organic Compounds, constituents of air pollution

Volatile Organic Compounds. Any organic molecules which evaporate easily. They are often associated with unpleasant odors or noxious fumes.

Volatile Organic Compounds. Organic chemicals all contain the element carbon (C); organic chemicals are the basic chemicals found in living things and in products derived from living things, such as coal, petroleum and refined petroleum products. Many of the organic chemicals we use do not occur in Nature, but were synthesized by chemists in laboratories.

Volatile organic compound; one of a group of carbon-containing compounds that evaporate readily at room temperature. VOCs are emitted as gases from certain solids or liquids; they include a variety of chemicals, some of which may have short- and long-term adverse health effects. VOCs are emitted by a wide array of products such as paints and lacquers, paint strippers, cleaning supplies, pesticides, building materials and furnishings, glues and adhesives, etc.

Volunteer organizing Committee. Term sometimes used to describe union members who volunteer for the union during organizing campaigns. Volunteers may donate their time and/or be compensated for lost wages while they assist the campaign by visiting workers at their homes, distributing leaflets, and attending meetings, etc.

(volatile organic compound) – The solvent ingredients in a coating.

Volatile Organic Compound. Any substance or compound with a vapor pressure greater than one tenth millimeter of mercury.

VOLATILE ORGANIC CARBON. (Water Quality) A measure of the amount of particulate material in a water sample that is lost upon heating. The measure is obtained by passing a given quantity of water through a glass fiber filter and then drying and weighing the solids retained on the filter. The pre-weighed filter is then heated to about 500°-600°C (930°-1,110°F) and a second weight is obtained. The amount lost during the heating process is termed VOC.

volatile organic compounds. VOCs can be released by human or natural source, and can react with the atmosphere to form ground-level ozone, and to a lesser degree, acid rain. Some VOCs, like the fumes from numerous interior products (glues, paints, cabinets, carpets and pads, furniture, etc.) are toxic, and can cause a range of health problems from occasional headaches to allergic reactions, depending on the concentration and the sensitivity of the individual. "Least toxic" products are those which contain levels of VOCs below what the EPA or other credible sources have determined to be safe levels. In some cases, a "least toxic" product may be preferable to a "non-toxic" product for reasonable performance. For additional assurance, consider mechanical ventilation with an air-to-air heat exchanger that gives fresh air without wasting heat.

Volatile Organic Compound. VOCs are organic compounds composed of hydrogen and carbon. Also called hydrocarbons.

Short for Volatile Organic Compound. An organic compound which volatizes by itself in the respective surrounding conditions (temperature and pressure).

VOLATILE ORGANIC COMPOUND. Organic compounds which are volatile and react with sunlight to form groundlevel ozone, the main component of smog.

Volatile organic compound. 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.

VOLATILE ORGANIC COMPOUND. 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.

Volatile Organic Compound; those carbon based compounds listed in EPA methods 502.2, 524.2, 551, 601, 602, 603, 624, 1624C, 1666, 1671, 8011, 8015B, 8021B, 8031, 8032A, 8033, 8260B and those with similar vapor pressure or boiling points

An abbreviation for volatile organic compound.

volatile organic compound. A term that relates to chemicals that are negligibly photochemically reactive.

Volatile Organic Compounds. Hydrocarbon-based emissions released through evaporation or combustion. The term VOC is usually used in regard to stationary emission sources.

Volatile Organic Compound. an organic compound that evaporates readily at atmospheric temperatures. A major precursor of ozone

Abbreviation for volatile organic compounds, petroleum substances used as the vehicles for many printing inks. GO TO TOP OF PAGE

VOLATILE ORGANIC COMPOUND. 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.

Volatile Organic Compound. Any organic compound that participates in atmospheric photochemical reactions except those designated by EPA as having negligible photochemical reactivity.

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