Certainly! “Glycol” is a term used to refer to a class of organic compounds that contain two hydroxyl (OH) groups. These compounds are known for their versatility and are used in various industries and applications. The two most common types of glycols are ethylene glycol and propylene glycol, and they serve different purposes:

Ethylene Glycol: Ethylene glycol is perhaps the more well-known glycol and is commonly used as antifreeze in automotive cooling systems. It has a sweet taste, which is why it’s important to keep it away from children and pets as it can be toxic if ingested. Ethylene glycol is also used in the manufacture of plastics, resins, and as a de-icing agent for aircraft.

Propylene Glycol: Propylene glycol is a less toxic alternative to ethylene glycol and is often used as a food additive. It’s used in a wide range of products, including cosmetics, pharmaceuticals, and food items. It is known for its ability to absorb and retain moisture, making it useful in products like lotions, creams, and certain medications.

Both ethylene and propylene glycols are considered “glycols” due to their common structural feature of having two hydroxyl groups. These compounds are valued for their ability to dissolve a variety of substances and their relatively low toxicity compared to some other chemical compounds.