Introduction

Different types of glycols are used in the chemical industry, two of the most common being ethylene glycol and polyethylene glycol. Although both have a similar chemical structure, there are some important differences that are important to understand.

Properties of ethylene glycol

Ethylene glycol is a colorless, odorless liquid with moderate viscosity. It has a high solubility in water and is used as an antifreeze, a solvent for paints and varnishes, in the manufacture of polyesters and in the production of polyester resins. In addition, it is highly toxic, so its use must be careful and properly regulated.

Properties of polyethylene glycol

Polyethylene glycol is a transparent, odorless liquid, with a variable viscosity depending on its molecular weight. It is commonly used in the pharmaceutical industry as a laxative, lubricant and enemas, and also in the production of cosmetics and products. for personal care. Unlike ethylene glycol, polyethylene glycol is harmless and non-toxic.

Differences between both types of glycols

Although ethylene glycol and polyethylene glycol have similar structures, His properties and uses are very different. The main difference is that ethylene glycol is highly toxic and can only be used in non-contact applications. the human body, while polyethylene glycol is safe for use in pharmaceuticals and cosmetics.

On the other hand, other differences are:

• Ethylene glycol is more viscous than polyethylene glycol.
• Polyethylene glycol has a greater hydration capacity than ethylene glycol.
• Ethylene glycol is more volatile than polyethylene glycol.
• Polyethylene glycol is more stable than ethylene glycol.

Conclusions

In summary, although ethylene glycol and polyethylene glycol have a similar chemical structure, their properties and uses are very different. Ethylene glycol is toxic and is only used in non-contact applications. body, while polyethylene glycol is safe for use in pharmaceuticals and cosmetics.

You may also be interested in this related content:

• Difference between primary amines and secondary amines and tertiary amines
• Difference between molecule and compound
• Difference between aldose and ketose