Iron(III) sulfate

Iron(III) sulfate also known as ferric sulfate, is the chemical compound with the formula Fe₂(SO₄)₃.

Properties

Chemical

Ferric sulfate is used in industry as a coagulant.

Physical

Ferric sulfate is a yellow, hygroscopic compound. It is soluble in water, poorly soluble in organic solvents such as acetone, ethanol or various acetates. It is insoluble in sulfuric acid. The anhydrous form melts at 480 °C.

Availability

Iron(III) sulfate is available from many chemical suppliers.

One such seller on Amazon sells 4.5 kg of ferric sulfate at 18.40 $.

Preparation

Iron(III) sulfate can be made by reacting sulfuric acid, with a hot solution of ferrous sulfate, and an oxidizing agent, such as hydrogen peroxide.

2FeSO₄ + H₂SO₄ + H₂O₂ → Fe₂(SO₄)₃ + 2H₂O

Projects

• Fenton's reagent

Handling

Safety

Ferric sulfate both solid and as solution is corrosive to tissue and metallic objects.

Storage

Ferric sulfate should be stored in a tightly closed container, in a cool, dry place.

Disposal

Ferric sulfate can be neutralized with slaked lime.

References

Relevant Sciencemadness threads

• Iron (III) Sulfate (ferric sulfate) synthesis