Phenol
Definition and meaning of Phenol in chemistry.
Phenol is an aromatic organic compound characterized by a hydroxyl group directly bonded to a benzene ring. It is a white, volatile solid that is mildly acidic and requires careful handling due to its toxicity and ability to cause chemical burns.
In more detail
Phenol is a versatile precursor to a wide variety of materials and useful chemical compounds. It is primarily used in industry to synthesize plastics, epoxies, and polycarbonates. Unlike aliphatic alcohols, phenol is significantly more acidic because the negative charge of the phenoxide ion formed after losing a proton is stabilized by resonance with the aromatic ring. This stabilization makes it a weak acid that readily reacts with strong bases like sodium hydroxide to form water-soluble salts. Due to its corrosive nature, phenol must be handled with appropriate safety precautions in the laboratory.
Key facts
| Field | Organic Chemistry |
|---|---|
| Chemical formula | C6H5OH |
| Functional group | Hydroxyl group on an aromatic ring |
| Characteristic | Mildly acidic compared to typical alcohols |
Phenol reacts with formaldehyde to produce Bakelite, one of the first synthetic plastics, which is known for its electrical nonconductivity and heat resistance.
Frequently asked questions
Why is phenol more acidic than ethanol?
The conjugate base of phenol is stabilized by resonance delocalization of the negative charge into the benzene ring, making the proton much easier to remove.