Sulfuric Acid - H2SO4

What is Sulfuric Acid?

Sulfuric acid (H2SO4) is a strong acid with hygroscopic and oxidizing properties. Sulfuric Acid is a mineral acid with a chemical formula H2SO4.

Sulfuric acid is also known as Mattling acid or Oil of vitriol. It has a strong acidic nature and is corrosive. At higher concentrations, it acts as an oxidizing agent and dehydrating agent. It is a syrupy liquid which is odourless and has no colour. It is water-soluble and releases heat when dissolved in water. It is widely used in the manufacturing of fertilizers. It is also used in chemical synthesis and wastewater processes.

Anhydrous sulfuric acid has a dielectric constant of around 100 and is a very polar liquid. It is perhaps the most important heavy industrial chemical, with large-scale uses in a wide range of industries.

Properties of Sulfuric Acid – H2SO4

H2SO4 Sulfuric Acid
Molecular Weight/ Molar Mass 98.079 g/mol
Density 1.84 g/cm³
Boiling Point 337 °C
Melting Point 10 °C

Sulfuric Acid Structure – H2SO4

Sulfuric Acid structure

H2SO4 Uses (Sulfuric Acid)

  • It is used in making fertilizers
  • It is used in the production of steel and iron
  • It is used in chemical manufacturing industries
  • It is used in petroleum refining
  • It is used to produce phosphoric acid
  • It used as a cleaning agent in industries to remove the rust from steel and iron
  • It is used as a catalyst to convert cyclohexanone oxime to caprolactam used to make nylon
  • It is used in lead-acid batteries as an electrolyte
  • It is used in making ammonium sulfate
  • It is used in storage batteries


1. What is sulfuric acid used for?
The primary application of sulfuric acid is in fertilizer processing, e.g., lime super phosphate and ammonium sulfate. It is commonly used in chemical processing, e.g. in the manufacture of hydrochloric acid, nitric acid, sulfate salts, synthetic detergents, dyes and pigments, explosives, and medicines.

2. What is the world’s strongest acid?
Carborane super acids can be considered the strongest solar acid in the world, because fluoroantimonic acid is in reality a mixture of hydrofluoric acid and pentafluoride antimony.

3. How do you neutralize sulfuric acid?
Pour the baking soda directly into a spill of acid. This will neutralize light acids such as vinegar, or even toxic, strong acids such as muriatic and sulphuric acids. Douse with the baking soda (sodium bicarbonate, NaHCO3) the entire contaminated region to neutralize the acid.

4. Can you neutralize sulfuric acid with water?
When you have a certain amount of (concentrated) sulphuric acid, you should pour it into a sodium hydroxide solution. The water will dilute and carry off some heat that the sodium carbonate or bicarbonate produces when it neutralizes the acid.

5. Is sulfuric acid ionic or molecular?
Water forms a compromise between H2O and H3O+ and -OH. That doesn’t make anything ionic. Sulfuric acid is a compound with covalence, since all the bonds are covalent. The fact that it ionizes readily is insignificant to debate.

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