Why is sulfuric acid important to chemical manufacturing?

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Sulfuric acid (H2SO4) is the most widely manufactured industrial compound in the world, serving as a fundamental raw material across numerous sectors. Its importance in chemical manufacturing stems from its versatility as a strong mineral acid, a powerful dehydrating agent, and an effective oxidizing agent.12

Key industrial applications include:

  • Fertilizer Production: Approximately half of the global production is used to convert phosphate rock into phosphoric acid, which is then processed into essential phosphate fertilizers.132
  • Petroleum Refining: It is used in the alkylation process to increase the octane rating of gasoline and to remove impurities from fuels and lubricants.12
  • Metallurgy: The acid is critical for "pickling," a process that cleans the surface of steel and other metals by removing oxidation and scale.132
  • Chemical Synthesis: It serves as a precursor for manufacturing detergents, dyes, explosives, plastics, and other inorganic compounds.12
  • Energy Storage: Dilute sulfuric acid acts as the electrolyte in lead-acid batteries.12