Question

Which of the following compound is used for production of Nylon-6,6?

• A. Adipic acid
• B. Succinic acid
• C. Malonic acid
• D. Glutaric acid

Hint:

Nylon-6,6 is formed from hexamethylenediamine and adipic acid. Always remember that both monomers contain six carbon atoms, which is why the polymer is called Nylon-6,6.

Answer 1

The Correct Option is A

Step 1: Recall the monomers of Nylon-6,6.
Nylon-6,6 is a condensation polymer. It is prepared by the reaction between hexamethylenediamine and adipic acid. These two monomers combine with elimination of water molecules to form the polyamide chain known as Nylon-6,6.
Step 2: Understand the name Nylon-6,6.
The first \(\mathrm{6}\) in Nylon-6,6 represents the six carbon atoms present in the diamine, that is, hexamethylenediamine. The second \(\mathrm{6}\) represents the six carbon atoms present in the dicarboxylic acid, that is, adipic acid. Hence, adipic acid is the required acid component for the preparation of Nylon-6,6.
Step 3: Comparison with other options.

• (A) Adipic acid: Correct. It is one of the monomers used in Nylon-6,6 production.
• (B) Succinic acid: Incorrect. It has only four carbon atoms and is not used for Nylon-6,6.
• (C) Malonic acid: Incorrect. It has only three carbon atoms and is not the acid used here.
• (D) Glutaric acid: Incorrect. It has five carbon atoms and is also not used in Nylon-6,6 preparation.

Step 4: Conclusion.
Thus, the compound used for the production of Nylon-6,6 is adipic acid.
Final Answer:Adipic acid.