Quick Search
CAS NO:7446-09-5
EC NO:231-195-2
E 220 (Sulfur Dioxide) or sulphur dioxide is the chemical compound with the formula SO2.
E 220 (Sulfur Dioxide) is a toxic gas responsible for the smell of burnt matches.
E 220 (Sulfur Dioxide) is released naturally by volcanic activity and is produced as a by-product of copper extraction and the burning of sulfur-bearing fossil fuels.
E 220 (Sulfur Dioxide) has a pungent smell like nitric acid.
E 220 (Sulfur Dioxide) is primarily produced for sulfuric acid manufacture (see contact process). In the United States in 1979, 23.6 million metric tons (26,014,547 US short tons) of E 220 (Sulfur Dioxide) were used in this way, compared with 150 thousand metric tons (165,347 US short tons) used for other purposes. Most E 220 (Sulfur Dioxide) is produced by the combustion of elemental sulfur. Some E 220 (Sulfur Dioxide) is also produced by roasting pyrite and other sulfide ores in air.
Uses
The overarching, dominant use of E 220 (Sulfur Dioxide) is in the production of sulfuric acid.
-Precursor to sulfuric acid:
E 220 (Sulfur Dioxide) is an intermediate in the production of sulfuric acid, being converted to sulfur trioxide, and then to oleum, which is made into sulfuric acid.
E 220 (Sulfur Dioxide) for this purpose is made when sulfur combines with oxygen. The method of converting E 220 (Sulfur Dioxide) to sulfuric acid is called the contact process. Several billion kilograms are produced annually for this purpose.
-Food preservative:
E 220 (Sulfur Dioxide) is sometimes used as a preservative for dried apricots, dried figs, and other dried fruits, owing to its antimicrobial properties and ability to prevent oxidation,and is called E220 when used in this way in Europe. As a preservative, it maintains the colorful appearance of the fruit and prevents rotting.
E 220 (Sulfur Dioxide) is also added to sulfured molasses. Sublimed sulfite is ignited and burned in an enclosed space with the fruits. This is usually done outdoors. Fruits may be sulfured by dipping them into an either sodium bisulfite, sodium sulfite or sodium metabisulfite.
Winemaking
E 220 (Sulfur Dioxide) was first used in winemaking by the Romans, when they discovered that burning sulfur candles inside empty wine vessels keeps them fresh and free from vinegar smell.
E 220 (Sulfur Dioxide) is still an important compound in winemaking, and is measured in parts per million (ppm) in wine.
E 220 (Sulfur Dioxide) is present even in so-called unsulfurated wine at concentrations of up to 10 mg/L.
E 220 (Sulfur Dioxide) serves as an antibiotic and antioxidant, protecting wine from spoilage by bacteria and oxidation - a phenomenon that leads to the browning of the wine and a loss of cultivar specific flavors.
E 220 (Sulfur Dioxide)s antimicrobial action also helps minimize volatile acidity. Wines containing E 220 (Sulfur Dioxide) are typically labeled with "containing sulfites".
E 220 (Sulfur Dioxide) exists in wine in free and bound forms, and the combinations are referred to as total SO2.
-As a reducing agent:
E 220 (Sulfur Dioxide) is also a good reductant. In the presence of water, E 220 (Sulfur Dioxide) is able to decolorize substances. Specifically, it is a useful reducing bleach for papers and delicate materials such as clothes. This bleaching effect normally does not last very long. Oxygen in the atmosphere reoxidizes the reduced dyes, restoring the color. In municipal wastewater treatment, E 220 (Sulfur Dioxide) is used to treat chlorinated wastewater prior to release.
E 220 (Sulfur Dioxide) reduces free and combined chlorine to chloride.
E 220 (Sulfur Dioxide) is fairly soluble in water, and by both IR and Raman spectroscopy; the hypothetical sulfurous acid, H2SO3, is not present to any extent. However, such solutions do show spectra of the hydrogen sulfite ion, HSO3−, by reaction with water, and it is in fact the actual reducing agent present:
SO2 + H2O ⇌ HSO3− + H+
-Biochemical and biomedical roles:
E 220 (Sulfur Dioxide) or its conjugate base bisulfite is produced biologically as an intermediate in both sulfate-reducing organisms and in sulfur-oxidizing bacteria, as well. The role of E 220 (Sulfur Dioxide) in mammalian biology is not yet well understood.
E 220 (Sulfur Dioxide) blocks nerve signals from the pulmonary stretch receptors and abolishes the Hering–Breuer inflation reflex.
E 220 (Sulfur Dioxide) is considered that endogenous E 220 (Sulfur Dioxide) plays a significant physiological role in regulating cardiac and blood vessel function, and aberrant or deficient E 220 (Sulfur Dioxide) metabolism can contribute to several different cardiovascular diseases, such as arterial hypertension, atherosclerosis, pulmonary arterial hypertension, and stenocardia.
E 220 (Sulfur Dioxide) was shown that in children with pulmonary arterial hypertension due to congenital heart diseases the level of homocysteine is higher and the level of endogenous E 220 (Sulfur Dioxide) is lower than in normal control children. Moreover, these biochemical parameters strongly correlated to the severity of pulmonary arterial hypertension. Authors considered homocysteine to be one of useful biochemical markers of disease severity and E 220 (Sulfur Dioxide) metabolism to be one of potential therapeutic targets in those patients.
-Aspirational applications:
-As a refrigerant
Being easily condensed and possessing a high heat of evaporation, E 220 (Sulfur Dioxide) is a candidate material for refrigerants. Prior to the development of chlorofluorocarbons, E 220 (Sulfur Dioxide) was used as a refrigerant in home refrigerators.
-Climate engineering
Injections of E 220 (Sulfur Dioxide) in the stratosphere has been proposed in climate engineering. The cooling effect would be similar to what has been observed after the large explosive 1991 eruption of Mount Pinatubo. However this form of geoengineering would have uncertain regional consequences on rainfall patterns, for example in monsoon regions.
Properties:
Chemical formula: SO2
Molar mass: 64.066 g mol−1
Appearance: Colorless and pungent gas
Odor: Pungent; similar to a just-struck match
Density: 2.6288 kg m−3
Melting point: −72 °C; −98 °F; 201 K
Boiling point: −10 °C (14 °F; 263 K)
E 220 (Sulfur Dioxide) appears as a colorless gas with a choking or suffocating odor. Boiling point -10°C. Heavier than air. Very toxic by inhalation and may irritate the eyes and mucous membranes. Under prolonged exposure to fire or heat the containers may rupture violently and rocket. Used to manufacture chemicals, in paper pulping, in metal and food processing.
E 220 (Sulfur Dioxide) is a colorless gas with a pungent odor.
E 220 (Sulfur Dioxide) is a liquid when under pressure, and it dissolves in water very easily.
E 220 (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, E 220 (Sulfur Dioxide) can be released to the air from volcanic eruptions.
E 220 (Sulfur Dioxide) is a sulfur oxide.
E 220 (Sulfur Dioxide) has a role as a food bleaching agent, a refrigerant and an Escherichia coli metabolite.
Industry Uses:
-Agricultural chemicals (non-pesticidal)
-Bleaching agents
-Functional fluids (closed systems)
-Intermediates
-Oxidizing/reducing agents
-Processing aids, not otherwise listed
-Processing aids, specific to petroleum production
Consumer Uses:
-Agricultural products (non-pesticidal)
-Electrical and electronic products
-Paper products
-pesticide production raw material intermediate
Industry Processing Sectors:
-Agriculture, forestry, fishing and hunting
-All other basic inorganic chemical manufacturing
-All other basic organic chemical manufacturing
-Electrical equipment, appliance, and component manufacturing
-Food, beverage, and tobacco product manufacturing
-Mining (except oil and gas) and support activities
-Paper manufacturing
-Pesticide, fertilizer, and other agricultural chemical manufacturing
-Petroleum refineries
-Primary metal manufacturing
-Utilities
-Wholesale and retail trade
E 220 (Sulfur Dioxide) (SO2) is a colorless gas or liquid with a strong suffocating odor. SO2 is used as a fungicide and preservative for grapes.
E 220 (Sulfur Dioxide) is also used for the manufacture of corn syrups and molasses, in the manufacture of wine to destroy bacteria, mold, and unwanted yeasts, and for sterilization, and prevents the formation of nitrosamines in beer.
SO2 is used to manufacture hydrosulfites, to bleach wood pulp and paper, to process, disinfect, and bleach food, for waste and water treatment, in metal and ore refining, and in oil refining.
E 220 (Sulfur Dioxide), (SO2), inorganic compound, a heavy, colourless, poisonous gas. E 220 (Sulfur Dioxide) is produced in huge quantities in intermediate steps of sulfuric acid manufacture.
E 220 (Sulfur Dioxide) has a pungent, irritating odour, familiar as the smell of a just-struck match. Occurring in nature in volcanic gases and in solution in the waters of some warm springs, E 220 (Sulfur Dioxide) usually is prepared industrially by the burning in air or oxygen of sulfur or such compounds of sulfur as iron pyrite or copper pyrite.
E 220 (Sulfur Dioxide) is a precursor of the trioxide (SO3) used to make sulfuric acid. In the laboratory the gas may be prepared by reducing sulfuric acid (H2SO4) to sulfurous acid (H2SO3), which decomposes into water and E 220 (Sulfur Dioxide), or by treating sulfites (salts of sulfurous acid) with strong acids, such as hydrochloric acid, again forming sulfurous acid.
E 220 (Sulfur Dioxide) can be liquefied under moderate pressures at room temperatures; the liquid freezes at −73° C (−99.4° F) and boils at −10° C (14° F) under atmospheric pressure. Although its chief uses are in the preparation of sulfuric acid, sulfur trioxide, and sulfites, E 220 (Sulfur Dioxide) also is used as a disinfectant, a refrigerant, a reducing agent, a bleach, and a food preservative, especially in dried fruits.
About E 220 (Sulfur Dioxide)
Helpful information
E 220 (Sulfur Dioxide) is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 100 000 to < 1 000 000 tonnes per annum.
E 220 (Sulfur Dioxide) is used in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites and in manufacturing.
Biocidal Uses
E 220 (Sulfur Dioxide) is being reviewed for use as a biocide in the EEA and/or Switzerland, for: product preservation, preservation of fibres, leather, rubber, or polymers.
Consumer Uses
ECHA has no public registered data indicating whether or in which chemical products the substance might be used. ECHA has no public registered data on the routes by which E 220 (Sulfur Dioxide) is most likely to be released to the environment.
Article service life
Release to the environment of E 220 (Sulfur Dioxide) can occur from industrial use: formulation of mixtures, in processing aids at industrial sites, as an intermediate step in further manufacturing of another substance (use of intermediates) and as processing aid.
E 220 (Sulfur Dioxide) can be found in products with material based on: leather (e.g. gloves, shoes, purses, furniture).
Widespread uses by professional workers
E 220 (Sulfur Dioxide) is used in the following products: heat transfer fluids.
E 220 (Sulfur Dioxide) has an industrial use resulting in manufacture of another substance (use of intermediates).
E 220 (Sulfur Dioxide) is used for the manufacture of: , chemicals, rubber products and plastic products.
Release to the environment of E 220 (Sulfur Dioxide) can occur from industrial use: as an intermediate step in further manufacturing of another substance (use of intermediates) and of substances in closed systems with minimal release.
Formulation or re-packing
E 220 (Sulfur Dioxide) is used in the following products: pH regulators and water treatment products, paper chemicals and dyes, laboratory chemicals, water treatment chemicals, metal surface treatment products, non-metal-surface treatment products and pharmaceuticals.
E 220 (Sulfur Dioxide) has an industrial use resulting in manufacture of another substance (use of intermediates).
Release to the environment of E 220 (Sulfur Dioxide) can occur from industrial use: formulation of mixtures, in processing aids at industrial sites, as an intermediate step in further manufacturing of another substance (use of intermediates) and as processing aid.
Uses at industrial sites
E 220 (Sulfur Dioxide) is used in the following products: pH regulators and water treatment products, paper chemicals and dyes, water treatment chemicals, metal surface treatment products, non-metal-surface treatment products and pharmaceuticals.
E 220 (Sulfur Dioxide) has an industrial use resulting in manufacture of another substance (use of intermediates).
E 220 (Sulfur Dioxide) is used in the following areas: formulation of mixtures and/or re-packaging.
E 220 (Sulfur Dioxide) is used for the manufacture of: chemicals, metals, food products, mineral products (e.g. plasters, cement), pulp, paper and paper products and fabricated metal products.
Release to the environment of E 220 (Sulfur Dioxide) can occur from industrial use: as an intermediate step in further manufacturing of another substance (use of intermediates), in processing aids at industrial sites, as processing aid and formulation of mixtures.
Manufacture
Release to the environment of E 220 (Sulfur Dioxide) can occur from industrial use: manufacturing of the substance.
E 220 (Sulfur Dioxide) is a noncombustible colorless gas at ambient temperatures with a characteristic, strong, suffocating odor. The Odor Threshold is 1.1ppm. Shipped as a liquefied compressed gas.
Uses
E 220 (Sulfur Dioxide) has a wide range of industrial applications, the most notable being as an intermediate in producing sulfuric acid.
E 220 (Sulfur Dioxide) is used to produce chlorine dioxide, sodium bisulfite, and sodium dithionate, which are all bleaching agents. Also, E 220 (Sulfur Dioxide) itself is a bleaching agent used in bleaching textile fibers, straw, glue, gelatin, and other substances.
E 220 (Sulfur Dioxide) is used extensively in the food industry to preserve vegetables and dry fruits such as apricots and cherries; as a bleach and steeping agent for grains; to prevent growth of bacteria in processing soy proteins; in refining sugar; as an additive to wine to destroy molds, bacterias, and undesired wild yeast; to prevent formation of nitrosamines in beer in the malting process; and in producing highfructose corn syrups.
E 220 (Sulfur Dioxide) is used in removing oxygen in petroleum recovery processes to prevent corrosion in piping and storage systems. Also, it is applied in water treatment to reduce residual chlorine. In clay processing it reduces iron compounds and other color-forming impurities. Other uses are extracting sulfide ores; casting magnesium; catalyst modifier in certain organic oxidation reactions; and colorimetric analysis of sulfite ion in aqueous samples.
E 220 (Sulfur Dioxide) occurs in nature in volcanic gases.
E 220 (Sulfur Dioxide) is found in the upper atmosphere at varying but trace concentrations resulting from natural processes and human activities.
E 220 (Sulfur Dioxide) occurs in the automotive exhausts and in many fire and stack emission gases.
E 220 (Sulfur Dioxide) is produced from burning sulfur–containing fuels, such as coal and oil. Also, it is produced in the petroleum refining process.
E 220 (Sulfur Dioxide) is partly responsible for causing acid rain.
E 220 (Sulfur Dioxide) is manufactured mostly by combustion of sulfur or its iron sulfide mineral, pyrite, FeS2 , in air. The flame temperatures for such combustion of sulfur in the air are usually in the range 1,200 to 1,600°C. Many types of sulfur burners are available and are used to produce E 220 (Sulfur Dioxide).
E 220 (Sulfur Dioxide) is a compound formed by the combination of the elements sulfur and oxygen.
E 220 (Sulfur Dioxide) may be cooled and compressed to a colorless liquid, which, at one atmosphere pressure, boils at 14°F (10.0°C) and freezes at -104.6°F (-75.9°C).
E 220 (Sulfur Dioxide) liquid is heavier than water, and has a specific gravity of 1.436 at 32°F (0°C). As a gas, it is more than twice as heavy as air; its relative density is 2.2638 at atmospheric pressure and 32°F (0°C).
E 220 (Sulfur Dioxide) is not flammable or explosive in either the gaseous or liquid state.
E 220 (Sulfur Dioxide) is a relatively stable chemical. Temperatures above 3632°F (2000°C) are required to bring about detectable decomposition of E 220 (Sulfur Dioxide). Dry E 220 (Sulfur Dioxide) (less than 100 ppm water) is not corrosive to ordinary metals. However, in the presence of even small amounts of water, E 220 (Sulfur Dioxide) becomes corrosive to most metals, with exceptions including lead, Type 316 stainless steel, and certain alloys. Glass and certain plastics are also resistant to moist E 220 (Sulfur Dioxide).
E 220 (Sulfur Dioxide) is a colorless gas.
E 220 (Sulfur Dioxide) is stable, and non-corrosive when dry to common materials except zinc.
E 220 (Sulfur Dioxide) is corrosive when wet and incompatible with strong reducing or oxidizing agents, moisture, zinc, and its alloys.
E 220 (Sulfur Dioxide) has a large number of industrial applications.
E 220 (Sulfur Dioxide) is used as a bleaching andfumigating agent; as a disinfectant, for treat ing wood pulp for manufacturing paper, inmetal refining, for preserving food and vegetables, and as a reducing agent.
E 220 (Sulfur Dioxide) is a majorair pollutant and is produced when soft coal,oils, or other sulfur-containing substances areburned. Automobile exhaust gases also contribute to air pollution.
E 220 (Sulfur Dioxide) in theatmosphere reacts with moisture to form sulfurous acid, or is oxidized to sulfur trioxide,which forms sulfuric acid, causing acid rain.
E 220 (Sulfur Dioxide) is a preservative, being a gas that dissolves in water to yield sulfurous acid.
E 220 (Sulfur Dioxide) pre- vents the discoloration of foods by combining with the sugars and enzymes. it also inhibits bacterial growth.
E 220 (Sulfur Dioxide) is used in beverages, cherries, wines, and fruits.
E 220 (Sulfur Dioxide) can be made by burning sulfur, or by roasting sulfide ores such as pyrites, sphalerite, and cinnabar.
E 220 (Sulfur Dioxide) usually is prepared industrially by the burning in air or oxygen of sulfur or such compounds of sulfur as iron pyrite or copper pyrite.
IUPAC names:
(oxo-lambda4-sulfanylidene)oxidane
(oxo-λ4-sulfanylidene)oxidane
(oxo-λ⁴-sulfanylidene)oxidane
Dióxido de azufre líquido (SO2)
oxosulfane oxide
SO2
SULFUR DIOXIDE
E 220 (Sulfur Dioxide)
E 220 (Sulfur Dioxide)
E 220 (Sulfur Dioxide)
E 220 (Sulfur Dioxide)
E 220 (Sulfur Dioxide)
Sulphur Dioxide
Sulphur dioxide
sulphur dioxide
Sulphur Dioxide
Sulphur dioxide
sulphur dioxide
Sulphur dioxide water
sulphur-dioxide-
SYNONYMS:
E 220 (Sulfur Dioxide),liquid
sulfurous acid gas
E 220 (Sulfur Dioxide)
E 220 (Sulfur Dioxide) Standard
siarkidwutlenek(polish)
SO2
Sulfur oxide
Sulfur oxide (SO2)
E 220 (Sulfur Dioxide) pressure tin with 100 ml (net ~128 G)
SULFUR DIOXIDE, PRESSURE TIN WITH 100 ml (NET CA. 128 gm)
SULFUR DIOXIDE, 99.9+%
SULFUR DIOXIDE CYL. WITH 5 L NET
SulfureDioxide
SULPHUROUSACIDANHYDRIDE
E 220 (Sulfur Dioxide) Stand
AQUASTAR? Coulomat CN (Safer Formulation)
SULFUROUS ANHYDRIDE
E 220 (Sulfur Dioxide) >=99.98%
sulfurdioxide(so2)
sulfurdioxidecyl.with2l(net~2.5kg)
Sulfurous acid anhydride
Sulfurous oxide
sulfurousacidanhydride
sulfurousoxide
sulfuroxide
sulfuroxide(so2)
sulfursuperoxide
E 220 (Sulfur Dioxide) cyl. with 5 L (net ~6 kg)
caswellnumber813
dioxidedesoufre
epapesticidechemicalcode077601
Fermenicide liquid
Fermenicide powder
fermenicideliquid
fermenicidepowder
Fermenticide liquid
Oxosulfane oxide
Schwefeldioxid
Schwefeldioxyd
Siarki dwutlenek
siarkidwutlenek
SULPHUR DIOXIDE
E 220 (Sulfur Dioxide) (ca. 8% in Tetrahydrofuran, ca. 1.2 mol/L)
E 220 (Sulfur Dioxide) (ca. 2.5% in Dichloromethane, ca. 0.5 mol/L)
E 220 (Sulfur Dioxide) ISO 9001：2015 REACH
12143-17-8 [RN]
231-195-2 [EINECS]
67015-63-8 [RN]
7446-09-5 [RN]
Dioxide, Sulfur
MFCD00011450 [MDL number]
Oxosulfane oxide [ACD/IUPAC Name]
Oxosulfanoxid [German] [ACD/IUPAC Name]
Oxyde de oxosulfane [French] [ACD/IUPAC Name]
Schwefeldioxyd [German]
Siarki dwutlenek [Polish]
Sulfane, oxo-, oxide [ACD/Index Name]
Sulfate(1-), dioxo-
Sulfon
SULFUR DIOXIDE [Wiki]
SULFUR OXIDE
