Determination of Sulfuric Acid and Oleum Concentration
Sulfuric acid is widely used in the chemical industry, plastics industry and petrochemistry, for the production of phosphoric acid as a starting material for fertilizers, in the metal industry (e.g. in etching baths), and as electrolyte in lead-acid batteries.
Quality control in sulfuric acid production
Sulfuric acid (H2SO4) is a high production volume chemical and plays an important role in various industries. Sulfuric acid is a colorless and odorless oily liquid which is highly hygroscopic. Depending on its concentration the acid is used for different purposes.
The production of sulfuric acid proceeds in several steps starting from sulfur dioxide SO2. The biggest industry in need for sulfuric acid is the fertilizer production (approx. 50–60 % of the total H2SO4 production volume). The acid is also needed for the manufacturing of various goods and chemicals (e.g. hydrochloric and nitric acid, synthetic fibers, pigments). Other applications include the pickling process to remove impurities from metals, the recovery of metals and the application as electrolyte in storage batteries.
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