Sulphuric Acid

Sulphuric Acid is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with molecular formula H2SO4. It is a colourless and viscous liquid that is soluble in water and is synthesized in reactions that are highly exothermic. It is used to make fertilisers and other chemicals, in petroleum refining, iron and steel production, water treatment and many other applications.

Synonyms
Hydrogen Sulfate, Battery Acid, Sulfuric Acid, Oil of Vitriol
Chemical Formula
H2SO4
CAS Number
7664-93-9

Characteristics

Molar Weight
98.079 g/mol
Melting Point
10.31°C
Boiling Point
337°C
Density
1.8302 g/cm3
Forms
Liquid (clear)

Uses and Applications

Key applications

  • Metal working
  • Oxidising agent
  • Cleaning products
  • Etching & Engraving
  • Pulp and paper
  • Fertiliser
  • Agricultural
  • Batteries
General information about Sulfuric Acid
Sulfuric acid (Hydrogen Sulfate, Battery Acid, Sulfuric Acid, Vitriol Oil) is a key chemical in the global chemical industry. Whether concentrated or as a water-based solution, the chemical performs important functions in countless manufacturing processes and has indispensable properties for global industry.
With an annual global production of over 150 million metric tons, industrially produced acid has become the most important chemical in modern industry. Since sulfuric acid is used in the production of goods in almost all everyday areas, global demand is correspondingly high. As a result, sulfuric acid is often referred to as the "blood of chemistry." Some key properties distinguish sulfuric acid and thus contribute to solving industry requirements.
Other applications of sulfuric acid
As already indicated, sulfuric acid is required in the manufacture of a large number of everyday goods: the production of detergents, pharmaceuticals, dyes for textiles and a wide range of man-made fibres would be virtually inconceivable without the use of sulfuric acid.
More of sulfuric acid
In chemistry, sulfuric acid is represented by the chemical formula H2SO4. In its original form, concentrated sulfuric acid is a colourless, viscous liquid with a molar mass of 98.079 g/mol, and its standard density is 1.83 g/cm. Thus, sulfuric acid is highly soluble in water and can also be used as a dilutant acid for industrial applications. With a pKs value of -3 for diluted sulfuric acid, it is nevertheless one of the strong acids. Its low pH value of 2.75 is also one of the characteristic indicators of strong acids. The boiling point of the chemical is +337 °C, and the melting point is reached at +10.31 °C.
However, concentrated sulfuric acid has some other characteristics that make it particularly useful in modern industry. For example, it is a strong oxidizing agent and immediately chars organic materials, such as wood. In addition, sulfuric acid is hygroscopic, meaning that it removes water from the air. When diluted with water, it also conducts electricity, which is an advantage in many industrial applications. Contact with clothing or skin, however, can cause severe damage and chemical burns and should therefore be urgently avoided. Due to its many effective properties, sulfuric acid is one of the 20 most important chemicals in industry worldwide.
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Sulfuric acid in agriculture

Most of the sulfuric acid produced worldwide is used in the production of fertilizers and pigments. In addition, the strong acid is indispensable for the majority of organic-technical syntheses. It is used as a reaction partner, catalyst or reaction aid and is therefore of major importance in a wide range of processes.
Aerial view to sewage treatment plant. Grey water recycling. Waste management in European Union.

Sulfuric acid in drinking water treatment

But sulfuric acid is also of central importance in the food industry, where the chemical is used as a technical additive in the production of modified starch and casein, for example. The properties of sulfuric acid are also essential in drinking water treatment. However, it is not contained in the end product - our drinking water.
This means that the acid is not present at all or only in traces that are harmless to health. In the European Union, for example, the chemical does not have to be listed on product packaging.