Phenolic group test | Phenol test with 2.5% ferric chloride (FeCl3)
Ferric Chloride Test with phenol:
Aqueous solution of phenol reacts with freshly prepared ferric chloride solution gives coloured complex. Most phenols give dark coloured/ violet colour solution.
The chemical reaction is given below.
6C6H5OH + FeCl3 → [Fe(C6H5O)6]3– (violet colour complex)+ 3HCl + 3H+