Also well-known as: SO2, sulfurous anhydride, sulfuroxide, sulfurous oxide, sulfurous acid anhydride

Sulfur dioxide, SO2, is a colorless gas or liquid with a strong, throttle odor. That is developed from the burning of fossil fuel (coal and oil) and also the smelting that mineral ores (aluminum, copper, zinc, lead, and also iron) the contain sulfur.

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Sulfur dioxide dissolves conveniently in water to type sulfuric acid. Sulfuric mountain is a significant component of acid rain. Acid rain can damages forests and crops, change the mountain of soils, and also make lakes and also streams acidic and also unsuitable because that fish. Sulfur dioxide likewise contributes come the degeneration of building materials and also paints, consisting of monuments and statues.

Most of the sulfur dioxide released into the environment originates from electric utilities, specifically those the burn coal. Some other sources of sulfur dioxide incorporate petroleum refineries, cement manufacturing, file pulp manufacturing, and also metal smelting and processing facilities. Locomotives, huge ships, and some non-road diesel equipment right now burn high-sulfur fuel and also release sulfur dioxide into the air. In nature, volcano eruptions can release sulfur dioxide right into the air.

Some dried fruits are kept using SO2 to avoid discoloration of the fruit. SO2 is additionally used in bleaching materials and also as a fumigant. In homes, sulfur dioxide gas can an outcome from tobacco smoke, improperly or inadequately vented gas appliances (such together stoves, ranges, furnaces, or garments dryers), gas or kerosene heaters, hardwood or coal stoves, car exhaust native attached garages, and also malfunctioning chimneys.


You have the right to be exposed come SO2 by breath it in the air or obtaining it on her skin. Civilization who live near commercial sources the sulfur dioxide may be exposed to it in the air. You are most most likely to be exposed if you work-related in markets where SO2 is produced, such together copper smelting or strength plants, or where it is offered in the manufacturing of sulfuric acid, paper, food preservatives, or fertilizers. People with malfunctioning appliances or chimneys in their residences may likewise be exposed come sulfur dioxide.

Most SO2 exposures are caused by civilization breathing contaminated outdoor air. Therefore, limit your activities outdoors as soon as you know that air pollution levels are high. The EPA and the smashville247.net department of organic Resources (DNR) worry air top quality alerts because that high pollution days. People with existing respiratory difficulties, such together asthma, should pay special attention to this air advisories. Special care should it is in taken with kid asthmatics to limit your outdoor tasks during high contamination days.

To mitigate the possibility of exposure to sulfur dioxide resulted in by a source in her home, girlfriend can:

Use gas appliances with digital (pilotless) ignition. This will get rid of the constant low-level pollutants from pilot lights.Use exhaust fans end gas stoves that room vented come the outdoors instead of fans that recirculate the wait indoors. Save the metal mesh filters on your exhaust fans clean (most deserve to be run through the dishwasher).Choose vented appliances at any time possible, and also make sure they space vented come the outdoors. Have actually a trained professional examine your appliances annually.Never heat your home with a gas selection or stove.Do no idle your car in the garage.Do not smoke indoors.

Short-term exposure to high levels of sulfur dioxide deserve to be life-threatening. Generally, exposures can cause a burning sensation in the nose and also throat. Also, exposure deserve to cause an obstacle breathing, including transforms in the body"s ability to take a breath or breath deeply, or take it in as lot air per breath. Permanent exposure come sulfur dioxide can reason changes in lung function and aggravate existing heart disease.

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People through asthma might be perceptible to alters in respiratory effects as result of SO2 exposure at also low concentrations. Sulfur dioxide is not classified together a human being carcinogen (it has actually not been shown to cause cancer in humans).