Definition

1. Noun:
   • A highly corrosive, dense, oily liquid acid: Sulfuric acid is a strong mineral acid with the chemical formula H₂SO₄. It is colorless when pure, extremely corrosive, and reacts violently with water and many organic materials.
   • A key industrial chemical: It is one of the most important industrial chemicals, used extensively in fertilizer production, petroleum refining, wastewater processing, and chemical synthesis.

Examples of Usage

• Noun:
  • The laboratory handled sulfuric acid with extreme caution.
  • Industrial production of fertilizers consumes large quantities of sulfuric acid.
  • The spill involved a dangerous concentration of sulfuric acid.

Advanced Usage

• "Concentrated sulfuric acid": Refers to the acid in its pure or nearly pure form, typically around 98% H₂SO₄, which is a powerful dehydrating and oxidizing agent.
  • Concentrated sulfuric acid will char paper and sugar.
• "Dilute sulfuric acid": Refers to the acid mixed with a larger proportion of water, which is less corrosive but still acidic.
  • The experiment called for a solution of dilute sulfuric acid.

Variants and Related Words

• Sulphuric acid (noun): An alternative British English spelling for "sulfuric acid." The meaning is identical.
• Oil of vitriol (noun): An archaic historical name for sulfuric acid.
• Sulfate (noun): A salt or ester of sulfuric acid (e.g., copper sulfate).
• Sulfonation (noun): A chemical reaction introducing a sulfonic acid group, often using sulfuric acid or its derivatives.

Synonyms

• Hydrogen sulfate (noun): A systematic chemical name.
• Vitriolic acid (noun): An older, less common synonym derived from "oil of vitriol."

Related Phrases

• Battery acid: A common, non-technical term for the sulfuric acid solution used in lead-acid batteries (e.g., car batteries).
  • Wear protective gear when dealing with battery acid.
• Chamber process / Contact process: Industrial methods for producing sulfuric acid.
  • The contact process is the modern standard for manufacturing sulfuric acid.

Noun

1. (H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry