Explain carbylamine test.

A chemical test for detecting primary amines is the carbylamine reaction, also known as Hofmann's isocyanide test.

The analyte is heated with alcoholic potassium hydroxide and chloroform in this reaction.

When a primary amine is present, isocyanide (carbylamine) is formed, which has a foul odor.

Final Answer: Carbylamines (or isocyanides) are formed when aliphatic/aromatic primary amines are heated with chloroform and alcoholic KOH.

Ph-NH₂ + CHCl₃ + 3KOH --> Ph-NC + 3KCl + 3H₂O