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f%_CP 1 t A"r,%,L VA V <br /> I Known Catalytic Activity <br /> I Water-Reactive <br /> Air &Water Reactions <br /> Dissolves in water to form sulfurous acid, a corrosive liquid. Moist sulfur dioxide is very corrosive due to the <br /> slow formation of sulfuric acid [Handling Chemicals Safely 1980 p.8761. <br /> Fire Hazard <br /> Containers may explode in heat of fire or they may rupture and release irritating toxic sulfur dioxide. Sulfur <br /> dioxide has explosive properties when it comes in contact with sodium hydride;potassium chlorate at elevated <br /> temperatures;ethanol;ether; zinc ethylsulfurinate at very cool temperatures(-15C) fluorine; chlorine <br /> trifluoride and chlorates. It will react with water or steam to produce toxic and corrosive fumes;When the <br /> liquid is heated it may release irritating,toxic sulfur dioxide gas. Avoid ammonia,monocesium or <br /> monopotassium acetylide;dicesium monoxide;iron(II)oxide;tin oxide; lead(IV)oxide;chromium; <br /> manganese;molten sodium,powder aluminum and rubidium. Sulfur dioxide has explosive properties when it <br /> comes in contact with sodium hydride;potassium chlorate at elevated temperatures; ethanol;ether; zinc <br /> ethylsulfurinate at very cool temperatures(-15C);fluorine;chlorine trifluoride and chlorates. It will react with <br /> water or steam to produce toxic and corrosive fumes.Hazardous polymerization may not occur. (EPA, 1998) <br /> Health Lazard <br /> It may cause death or permanent injury after very short exposure to small quantities. 1,000 ppm causes death in <br /> from 10 minutes to several hours by respiratory depression.It is an eye and respiratory tract irritant.Persons <br /> with asthma, subnormal pulmonary functions or cardiovascular disease are at a greater risk. (EPA, 1998) <br /> Reactivity Profile <br /> SULFUR DIOXIDE is acidic.Reacts exothermically with bases such as amines;amides,metal oxides,and <br /> hydroxides.Frequently used as a reducing agent although it is not a powerful one.Acts as a reducing bleach to <br /> decolorize many materials. Can act as an oxidizing agent. Supports combustion of powdered aluminum [Mellor <br /> 5:209-212 1946-471.Reacts explosively with fluorine [Mellor 2:1 1946-471. Supports burning of manganese <br /> [Mellor 12:187 1946-471.Readily liquefied by compression. Contact between the liquid and water may result in <br /> vigorous or violent boiling and extremely rapid vaporization.If the water is hot an explosion may occur. <br /> Pressures may build to dangerous levels if the liquid contacts water in a closed container [Handling Chemicals <br /> Safely 19801.Supports incandescent combustion of monocesium acetylide,monopotassium acetylide, cesium <br /> oxide, iron(II)oxide, tin oxide, and lead oxide[Mellor].Ethylene oxide and SO2 can react violently in pyridine <br /> solution with pressurization if ethylene oxide is in excess (Nolan, 1983,Case History 51). <br /> Belongs to the Following Reactive Group(s) <br /> Acids;Strong Oxidizing <br /> Potentially Incompatible Absorbents <br /> Use caution;Liquids with this reactive group classification have been known to react with the absorbents listed <br /> below. <br /> • Cellulose-Based Absorbents <br /> • Expanded Polymeric Absorbents <br /> Response Recommendations <br /> http://l27.0.0.1:54673/report?key=CH1554 4/15/2015 <br />