Chem Explorers

Sulphuric Acid: The Versatile Chemical Driving Industries

Sulphuric Acid: A Versatile Industrial Chemical

Sulphuric acid is considered one of the most important industrial chemicals because of its versatile use in various industries. Its production has increased significantly over the years, primarily because of its numerous applications as a key reagent in various chemical processes.

This article aims to provide an informative overview of the various uses of sulphuric acid in industries.

Uses in Fertilizer Industry

The fertilizer industry is one of the major end-users of sulphuric acid. In this industry, sulphuric acid is used in the production of superphosphate and ammonium sulphate fertilizers.

These fertilizers are essential in promoting plant growth and increasing the yield of crops. Superphosphate is made by reacting phosphate rock with sulphuric acid, which releases the nutrient phosphate.

Similarly, ammonium sulphate is produced by reacting ammonia with sulphuric acid, forming a salt rich in nitrogen and sulphur.

Uses in Metal Industry

Another key application of sulphuric acid is in the metal industry. It is used in pickling iron and steel, which is a process that removes impurities from the surfaces of these metals.

During this process, iron oxide forms on the surface of the metal, and the acid reaction dissolves the oxide layer, leaving behind a clean surface. Pickling is a critical process as it enhances the metal’s corrosion resistance.

Uses in Chemical Synthesis

Sulphuric acid plays an important role in chemical synthesis. It is used as a catalyst and a reactant in various chemical reactions.

One of the main applications of sulphuric acid in chemical synthesis is to produce other acids such as hydrochloric acid (HCl) and nitric acid (HNO3). These acids are important in producing plastics and pigments, as well as in the manufacture of dyes.

Sulphuric acid is also used in the production of synthetic detergents, pharmaceuticals, and in waste water processing. In the pharmaceutical industry, it is used in the manufacture of different drugs, including antibiotics and aspirin.

It is also used in synthetic fibre manufacturing, such as nylon and rayon.

Dilute Sulphuric Acid Uses

Dilute sulphuric acid refers to a solution of sulphuric acid in water, typically containing less than 10% sulphuric acid. Dilute sulphuric acid is used in a wide range of industries but mainly in the fertilizer industry.

Uses in Fertilizer Industry

In the fertilizer industry, dilute sulphuric acid is used in the production of different types of fertilizers, including superphosphate and ammonium sulphate. It is also used as a soil acidifier, helping to maintain the ideal acidity level of soils for different crops.

Other Uses

Dilute sulphuric acid has various other uses in different industries. In the battery industry, it is used as an electrolyte in lead-acid batteries, providing the necessary ions to generate electrical energy.

In the food industry, it is used as a acidity regulator. Dilute sulphuric acid is also used in the production of ether, starch, sugar, and alkenes.

In analytical chemistry, it is used in non-complementary redox titrations and acid-base titrations.


In conclusion, sulphuric acid is an essential chemical used in various industries for diverse applications, and its production has significantly increased with time. It is crucial in the fertilizer industry, the metal industry, as well as in chemical synthesis.

Dilute sulphuric acid also has a wide range of applications in different industries. Knowing the uses of sulphuric acid is important to use it safely and effectively in industrial processes.

Sulphuric Acid Properties and

Other Uses

Sulphuric acid, HSO, is a clear and oily liquid that has a high concentration of hydrogen ions. It is one of the most widely used chemicals in the world, often referred to as the “king of chemicals.” Apart from the primary uses of sulphuric acid in industries, it also has other unique properties that mirror its importance in different fields.

Reactivity and Importance in Industry

Sulphuric acid is an oxidizing agent, and many industries rely on its ability to remove electrons from other materials, making it an essential reagent in chemical reactions. It is also a dehydrating agent, where it is used to remove water from substances, making it crucial in industrial processes such as the production of rayon, nitroglycerine, detergents, and many more.

The electrode properties of sulphuric acid make it significant in the battery industry. In lead-acid batteries, sulphuric acid plays a vital role in storing electrical energy as it is capable of producing a high amount of charge carriers upon ionization.

It is also used as a catalyst, accelerating the rate of some chemical reactions.

Solubility and Naming Convention

Sulphuric acid is highly soluble in water, forming a dense solution that releases a considerable amount of heat upon mixing. The concentration and properties of sulphuric acid depend on the way it was produced.

The historical production of sulphuric acid takes place in two stages: the Contact Process and the Chamber Process. The Contact Process, also known as the Tower Process, produces purer sulphuric acid with a higher concentration of SO, while the Chamber Process produces dilute sulphuric acid with a lower concentration of SO.

The naming convention of sulphuric acid depends on the way it was produced. Chamber acid is the term used to refer to sulphuric acid produced using the Chamber Process, while tower acid is the designation for sulphuric acid produced using the Contact Process.

Battery acid is a term used to refer to diluted sulphuric acid typically used in lead-acid batteries.

Dilute Sulphuric Acid Properties

Dilute sulphuric acid is a colorless and odorless liquid that is less corrosive than the concentrated version. It cannot act as a strong oxidizing agent or a dehydrating agent because of its low concentration of hydrogen ions.

However, its properties as a hydrating agent make it an essential chemical in many industries. When mixed with water, dilute sulphuric acid can enhance the hydration of concrete, increasing its strength and durability.

In the textile industry, it is used as a dye assist, where it helps to improve color fastness.

Other Uses of Sulphuric Acid

Apart from the primary and secondary functions of sulphuric acid, it also has various other applications in different industries.

Cleaning and Sewage Applications

Sulphuric acid is a potent cleaning agent commonly used to clear blocked drains and remove stubborn stains. In sewage plants, sulphuric acid is used to lower the pH of sludge, which makes it easier to process.

Use in Electroplating

Sulphuric acid is used in electroplating to dissolve metal oxides and create a clean surface to deposit the desired metal on the item being plated. The process enhances metal finishing, preventing corrosion, enhancing wear resistance, and improving the aesthetic quality of an object.


Sulphuric acid has a wide range of properties that make it essential in different fields. Its reactivity, solubility, and different naming conventions make it a critical component in various industrial processes.

Dilute sulphuric acid’s unique properties as a hydrating agent make it versatile in different fields, while its ability to clean blocked drains, help sewage plants process sludge, and enhance metal finishing with electroplating showcases its versatility in diverse applications. Sulphuric acid is a versatile chemical widely used in various industries due to its unique properties.

Its primary uses are in the fertilizer and metal industries, as well as in chemical synthesis. Dilute sulphuric acid has different applications, including acidifying soil, cleaning blocked drains, and being a dye assist in the textile industry.

Sulphuric acid has various naming conventions, and the way it is produced affects its concentration and properties. It is crucial to use sulphuric acid safely and effectively in industrial processes.


Q: What is the primary use of sulphuric acid? A: Sulphuric acid is widely used in the fertilizer and metal industries, as well as in chemical synthesis.

Q: What is dilute sulphuric acid used for? A: Dilute sulphuric acid is used as a hydrating agent, in the electroplating industry, and cleaning blocked drains.

Q: What is the concentration of SO3 in chamber acid? A: Chamber acid has a lower concentration of SO3 than tower acid.

Q: Is sulphuric acid safe to use? A: Sulphuric acid is corrosive and can be harmful if not used safely.

It is crucial to apply the right safety measures when handling the chemical. Q: What is the relationship between sulphuric acid and metal oxides?

A: Sulphuric acid is used in electroplating to dissolve metal oxides and create a clean surface.

Popular Posts