Question

What is the IUPAC name of propylene glycol?

Answer 1

The IUPAC name of propylene glycol is "1,2-propanediol."

Explanation:

Propylene glycol is a simple organic compound commonly used in a variety of industrial and consumer products. It is a clear, colorless, odorless liquid that is hygroscopic, meaning it absorbs water from the environment. The chemical formula for propylene glycol is C3H8O2, and it is categorized as a diol because it contains two hydroxyl (-OH) groups.

According to IUPAC nomenclature, the systematic name of propylene glycol is "1,2-propanediol." This name indicates the following:

• Propanediol: This refers to a three-carbon chain (propane) with two hydroxyl groups (-OH) attached, which are characteristic of alcohols. This is consistent with the structure of propylene glycol.
• 1,2-: The numbers "1" and "2" in the name specify the positions of the hydroxyl groups on the carbon chain. The hydroxyl groups are attached to the first and second carbon atoms of the propane chain, respectively.

In summary, the name "1,2-propanediol" describes the structure of propylene glycol, highlighting its two alcohol groups attached to the first and second carbon atoms of the propane chain. This systematic naming convention helps provide clarity and precision when referring to chemical compounds.