Sulfur dioxide is a colorless gas with a pungent odor. It is a liquid when under pressure, and it dissolves in water very easily. Sulfur dioxide in the air comes mainly from activities such as the burning of coal and oil at power plants or from copper smelting. In nature, sulfur dioxide can be released to the air from volcanic eruptions.

The Acid Rain Program (ARP), established under Title IV -Acid Deposition Control (pdf) (156.3 KB) requires major emission reductions of sulfur dioxide (SO 2) and nitrogen oxides (NO x ), the primary precursors of acid rain, from the power sector. The SO 2 program sets a permanent cap on the total amount of SO 2 that may be emitted by …

Overview. CAS No. . Sulfur dioxide (SO₂) is a colorless gas with a characteristic, irritating, pungent odor. Exposure to sulfur dioxide may cause irritation to the eyes, …

Sulfur Dioxide Section 6. Accidental release measures Immediately contact emergency personnel. Stop leak if without risk. Note: see Section 1 for emergency contact information and Section 13 for waste disposal.

SO 2 emissions that lead to high concentrations of SO 2 in the air generally also lead to the formation of other sulfur oxides (SO x ). SO x can react with other compounds in the atmosphere to form small particles. These particles contribute to particulate matter (PM) pollution. Small particles may penetrate deeply into the lungs …

Sulfur dioxide. Formula: O 2 S; Molecular weight: 64.064; IUPAC Standard InChI: InChI=1S/O2S/c1-3-2 Copy. IUPAC Standard InChIKey: RAHZWNYVWXNFOC-UHFFFAOYSA-N Copy; CAS Registry Number: ; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file

The effects of exposure to any hazardous substance depend on the dose, the duration, how you are exposed, personal traits and habits, and whether other chemicals are present. For more information, call the ATSDR Information Center at 1-800-232-4636. This public health statement tells you about sulfur dioxide and the effects of exposure.

Chemical Formula: The chemical formula for sulfur dioxide is SO 2, indicating it comprises one sulfur atom and two oxygen atoms. Physical State: At room temperature, sulfur dioxide exists as a colorless gas. It can be converted to a liquid under pressure or low temperatures. Smell and Taste: Sulfur dioxide has a pungent, irritating odor akin to ...

Healthy nonasthmatics respond to higher concentrations of sulfur dioxide (≥1.0 ppm). Factors that can exacerbate the respiratory effects of sulfur dioxide include exercise and breathing of dry or cold air. Animal data …

Acid rain describes any form of precipitation that contains high levels of nitric and sulfuric acids. It can also occur in the form of snow, fog, and tiny bits of dry material that settle to Earth ...

This site provides information about sulfur dioxide and its effects.

Sulfur dioxide (also sulphur dioxide) is the chemical compound with the formula SO 2. The primary sources of sulfur dioxide are burning of fossil fuels in power plants, metal smelting, and volcanic emissions. Sulfur dioxide has a short lifetime in air, turning into sulfate aerosol particles in a day near the ground and in a month in the ...

Announcements. June 30, 2021 - EPA redesignates areas in Texas and Nebraska. After EPA sets a new National Ambient Air Quality Standard (NAAQS) or revises an existing standard, the Clean Air Act requires the agency to designate areas in the United States as "attainment" (meeting), "nonattainment" (not meeting) or "unclassifiable ...

Sulfur dioxide (SO 2) is a pungent, toxic gas that is the primary product of burning elemental sulfur. It exists widely in nature, mostly from volcanic activity and …

sulfur monoxide. sulfur oxide, any of several compounds of sulfur and oxygen, the most important of which are sulfur dioxide (SO 2) and sulfur trioxide (SO 3 ), both of which are manufactured in huge quantities in intermediate steps of sulfuric acid manufacture. The dioxide is the acid anhydride (a compound that combines with water to form an ...

For more information, contact: Agency for Toxic Substances and Disease Registry. Office of Innovation and Analytics, Toxicology Section. 4770 Buford Highway. Chamblee, GA 30341-3717. Phone: 1-800-CDC-INFO 888-232-6348 (TTY) Email: Contact CDC-INFO. ATSDR can also tell you the location of occupational and environmental health clinics.

ATSDR Sulfur Dioxide ToxFAQs. SULFUR DIOXIDE. CAS # . Agency for Toxic Substances and Disease Registry ToxFAQs June 1999 This fact sheet answers the most frequently asked health questions (FAQs) about sulfur dioxide. For more information, call the ATSDR Information Center at 1-888-422-8737. This fact sheet is …

Sulfur dioxide (SO2) is a non-inflammable colorless gas. SO2 is usually oxidized by ozone and hydrogen peroxide to form sulfur trioxide, a secondary pollutant …

Much information is available on ambient sulfur dioxide concentrations, and the assay system is well standardized and reasonably accurate. Among the procedures used are acidimetry, colorimetry, electrochemistry, fluorimetry, flame photometry, and emission and absorption spectroscopy (Cheremisinoff and Morresi, 1981; Perry and Young, 1977).

Sulfur dioxide, inorganic compound, a heavy, colorless, poisonous gas. It is produced in huge quantities in intermediate steps of sulfuric acid manufacture. It occurs in nature in volcanic gases and in solution in the waters of some warm springs. …

Sulfur dioxide is primarily used as a feedstock for the production of sulfuric acid (contact process). It is generally used in the synthesis of a variety of sulfur-containing organic compounds like alkyl/aryl sulfonyl chlorides, sulfinates, sultines, and polysulfone.

At room temperature, sulfur dioxide is a nonflammable, colorless gas with a very strong, pungent odor. Most people can smell sulfur dioxide at levels of 0.3 to 1 ppm. It is handled and transported as a liquefied compressed gas. It easily dissolves in water. The liquid is heavier than water. Although sulfur dioxide does not burn in air, cylinders of …

Sulfur Dioxide. Sulfur dioxide, with chemical formula SO 2, is a colorless gas with an irritating, choking odor.Normally a gas, sulfur dioxide has a density of 2.551 g/L and a solubility in water of 9.4 g per 100 mL (at 25 ° C). It has a melting point of − 98.3 ° F (− 72.4 ° C) and a boiling point of 14 ° F (− 10 ° C).. Sulfur dioxide is produced …

Interscan's GasD 8000 Series Portable Gas Analyzers for sulfur dioxide can measure three emission ranges of 0-20 ppm, 0-2000 ppb, and 0-50 ppm at resolutions of 0.01 ppm, 1 ppb, and 0.1 ppm, respectively. Several oil and gas companies have still not complied with measures to control pollutants, including SO2.

Sulphur dioxide is widely used in the food and drinks industries for its properties as a preservative and antioxidant. Whilst harmless to healthy persons when used in recommended concentrations, it can induce asthma when inhaled or ingested by sensitive subjects, even in high dilution. About one in nine asthmatics gives a history of asthma ...

Sulfur dioxide (SO 2) is a colorless, reactive air pollutant with a strong odor. This gas can be a threat to human health, animal health, and plant life. The main sources of sulfur dioxide emissions are from fossil fuel combustion and natural volcanic activity. Hawai'i Volcanoes National Park (NP) is unique in the national park system because ...

Sulfur Dioxide | SO2 or O2S | CID 1119 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, …

What Is Sulfur Dioxide? Sulfur dioxide (SO 2) is a gaseous air pollutant composed of sulfur and oxygen.SO 2 forms when sulfur-containing fuel such as coal, petroleum oil, or diesel is burned. Sulfur dioxide gas can also change chemically into sulfate particles in the atmosphere, a major part of fine particle pollution, which can blow hundreds of miles away.

SO 2 emissions that lead to high concentrations of SO 2 in the air generally also lead to the formation of other sulfur oxides (SO x ). SO x can react with other compounds in the atmosphere to form small particles. These particles contribute to particulate matter (PM) pollution: particles may penetrate deeply into sensitive parts of …