Sulfur Dioxide

Sulfur Dioxide(CAS:7446-09-5)

Take the sulfur and burn it with oxygen to make SO2. Then, direct the stream of SO2 gas into a reactor bed with some vanadium pentoxide catalyst and extra oxygen gas to make sulfur trioxide gas which is the acid anhydride of sulfuric acid. vanadium pentoxide is added to in the contact phase of making of sulfuric acid. V2O5 acts as a catalyst at 450�¢?? where SO2 is made to react with the left over O2 in the first step. Vanadium pentoxide series of sulfuric acid catalysts can be used in the process of sulfuric acid production, to be more specific, is the process of SO2+I/2O2---SO3. With the help of Vanadium Catalyst, the rate of conversion can be improved greatly. It can guarantee the air speed of operation to add 10-20% more when using type star ring catalysts or ring catalysts. Vanadium catalyst can be applied in many fields, such as, sulfur-based acid production, pyrite-based acid production, nonferrous smelting gas-based acid production, gypsum-based acid production etc. Type S101 Catalyst is a medium broad temperature vanadium catalyst which promotes the oxidation from SO2 to SO3, and it is developed by China. With 20 years of manufacturing S101 catalyst, it has reached the international advanced level. Due to its high-quality and steady performance, The advantages of S101 are as listed. Wide applicability, broad range of temperature, high conversion, and high mechanical strength etc. Ring or plum blossom shaped catalysts have solved some problems that cylinder-shaped catalyst encountered; namely, they are small pellets, high pressure drop and high energy consumption, bad resistance of dust accumulation. Type S101 series are broad temperature catalysts which suit for every bed of converter. Type S108 Series sulfuric acid catalysts are invented in early 80 s by China. The advantages of them are outstanding. In general, they are low ignition temperature, high activity in low temperature, high-resistant crushed strength etc. If can be used together with medium temperature type catalyst, such as, S101, you can make more profits; for instance, high conversion, and lowering environmental pollution. Type S108 is low temperature catalysts which suit for 1/3 top of the first bed to decrease inlet operating temperature, and 4th bed, 5th bed to improve equilibrium conversion and decrease gas emission.

Sulfur Dioxide SO2 CAS No.: 7446-09-5 EINECS No.: 231-195-2 UN No.: UN1079 Purity: 99.9% Dot Class: 2.3 Appearance: Colorless Liquid Grade Standard: Industrial Grade Precursor to sulfuric acid: 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. As a preservative reducing agent: Sulfur dioxide is sometimes used as a preservative for dried apricots, dried figs, and other dried fruits, it is also a good reductant. As a refrigerant: Being easily condensed and possessing a high heat of evaporation, sulfur dioxide is a candidate material for refrigerants.

Product Description A colorless gas with a choking or suffocating odor. Boiling point -10C. 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. Liquid sulphur dioxide (SO2) is a versatile chemical with many uses, both in liquid form or as a source of gaseous SO2. Liquid SO2 is used the pulp and paper industry, mining industry, and in the food industry as a preservative. It can function as a reducing agent, an oxidizing agent, a pH controller, purifying agent, preservative, a germicide and bleaching agent. SO2 can also be used as a refrigerant, heat transfer fluid and selective solvent. Products specification: Specifications Special grade Grade A SO2 content % 99.97 99.90 Residue content % 0.010 0.040 Moisture content % 0.020 0.060 Arsenic(As) content % 0.000004 0.0001 Color (as liquid) Water White Water White Color (as gas) Colorless Colorless Standard No. GB3637-93

Sulfur dioxide (also sulphur dioxide) is the chemical compound with the formula SO2. It is a poisonous gas with a pungent, irritating smell, that is released by volcanoes and in various industrial processes. Since coal and petroleum often contain sulfur compounds, their combustion generates sulfur dioxide unless the sulfur compounds are removed before burning the fuel. Further oxidation of SO2, usually in the presence of a catalyst such as NO2, forms H2SO4, and thus acid rain.[2] Sulfur dioxide emissions are also a precursor to particulates in the atmosphere. Both of these impacts are cause for concern over the environmental impact of these fuels.

Item R-908 Tio2 content(%) 94 Rutile content (%) 99 Surface treatment chemicals Alumina, zirconium The disposal of organic compounds Have Ph value 8.0-9.0 Density(g/cm3) 4.05 105c moisture % 0.3 Particle size micron 0.3 Oil absorption (g/100g) max 20 Resistivity (-m) 150 Cie l* 98.5 B* 1.8 Tint-reducing power (reynoldªqœ`®i›�‘ùåê e) 1900 Pb.As.Hg.Cr6+heavy metal element 10 Pbb, pbde No Exterior&interior durability Excellent Iso591-1:2000 R2 Astm d476:00 Ii, iii, iv Packaging detail: Packing & transportion 25kg, 500kg and1000kg, seaworthy and suitable for container transportation. Delivery detail: 15days

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