We make a concentrated sulfuric acid, sodium metabisulphite, hydrochloric acid and an oxidizing agent such as hydrogen peroxide or nitric acid. Warning: The procedures in this video, produce large quantities of toxic gases and deal with highly corrosive acids. All work must be performed in a hood with proper protective equipment. And all units must be made of glass to withstand the acids. Sodium metabisulfite in the reaction with the acid producing sulfur dioxide. This provides a convenient source of sulfurCarbon dioxide, which are easier to manage than the combustion of sulfur, but is acceptable if you do it this way. Just build a sophisticated gas-separation and cleaning system, so that the fumes of sulfur and soot do not clog the pipes, and possibly poison your air burns work. Sulfur dioxide into sulfuric acid, is converted using an oxidizing agent in water. In this case, or hydrogen peroxide or nitric acid. Industrially, the sulfur dioxide is reacted with oxygen over a catalystto make sulfur trioxide. This is more economical, but extremely difficult, not for the budget so that the metabisulfite / oxidizer chemical method is used instead. You can take potassium metabisulfite. Both are sterilized by the manufacturers of beer and beer mix of house wine production. It 'also used for dyeing craft. Therefore, it is very easy to get the metabisulphites without the need for expensive shipping costs or licenses. The oxidizing agent must be present...
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