What is the Difference Between Biphenyl and Naphthalene?

Biphenyl and naphthalene are two chemically related and closely similar organic compounds. The key difference between them lies in their structure and formation:

• Biphenyl: This compound is made from the linking of two phenyl groups, which are aromatic hydrocarbon groups. Biphenyl occurs as colorless crystals and has the molecular formula (C6H5)2. It is an aromatic hydrocarbon with a pleasant odor and is used as a starting material for the production of polychlorinated biphenyls, which are widely useful as dielectric fluids and heat transfer agents.
• Naphthalene: This compound is a polycyclic aromatic hydrocarbon (PAH) made from the fusion of two benzene rings. It has the chemical formula C10H8 and is commonly used as a moth repellent and in the production of dyes. Naphthalene is also used in the synthesis of various aromatic compounds and polymers.

In summary, the main difference between biphenyl and naphthalene is that biphenyl is formed from the linking of two phenyl groups, while naphthalene is formed from the fusion of two benzene rings.

Comparative Table: Biphenyl vs Naphthalene

Here is a table comparing the differences between biphenyl and naphthalene:

Both biphenyl and naphthalene are aromatic compounds, but they differ in their structure and synthesis. Biphenyl is formed from the linking of two benzene rings, while naphthalene is derived from the fusion of two benzene rings.