What is the Difference Between Polyethylene Glycol and Propylene Glycol

Thekey difference between polyethylene glycol and propylene glycolis that polyethylene glycol is a聚合物, whereas propylene glycol is a single molecular compound that can be named a diol.

Polyethylene glycol and propylene glycol are important organic compounds. Polyethylene glycol is a polymer compound derived frompetroleum, and its structure can be expressed as H-(O-CH₂-CH₂)_n-哦。丙二醇是一种粘性，无色的液体，具有化学配方CH3CH（OH）CH2OH。

内容

1.Overview and Key Difference
2.What is Polyethylene Glycol
3.What is Propylene Glycol
4.Polyethylene Glycol vs Propylene Glycol in Tabular Form
5.Summary – Polyethylene Glycol vs Propylene Glycol

What is Polyethylene Glycol?

Polyethylene glycol is a polymer compound that derives from petroleum, and its structure can be expressed as H-(O-CH₂-CH₂)_n-哦。There are many applications of this substance ranging from industrial applications to medicine.

The applications of polyethylene glycol include use of it as a basis of a number oflaxatives, as an excipient, in medicine to treat disimpaction, to fuse axons, as a lubricating coating for different surfaces in aqueous and non-aqueous environments, to create high osmotic pressures, as a polar stationary phase for gas chromatography, as surfactants, as a crowing agent in biology, to concentrate viruses in virology, etc.

Polyethylene glycol is biologically inert and considered safe by FDA. Moreover, there are some research studies ongoing about the allergy reactions related to this component added in processed foods, cosmetics, drugs, etc.

A.V.于1859年首次生产聚乙烯乙二醇。Lourenco和Charles Adolphe Wurtz。目前，我们可以通过乙二醇或乙二醇低聚物的相互作用来产生这种物质。

What is Propylene Glycol?

丙二醇是一种粘性，无色的液体，具有化学配方CH3CH（OH）CH2OH。它是无味的，但品尝了甜美的品尝。该物质包含两个酒精官能团，因此我们可以将其命名为二醇。通常，丙烯乙二醇可与不同的溶剂（例如水，丙酮和氯仿）混乱。通常，这些液体不侵蚀，但波动性非常低。

Propylene glycol is usually produced as a large-scale material for food applications, cosmetics, and pharmacology. Sometimes, we call this substance an alpha-propylene glycol to easily distinguish it from propane-1,3-diol.

We can prepare this compound in two ways: industrial production and laboratory production. Industrially, we can produce propylene glycol from propylene oxide. However, in the laboratory, the most common method for this production include fermentation methods.

There are many applications of propylene glycol: use of it as a feedstock for the production of polymers, as a component in some food items, as an anti-icing fluid, manufacture of electronic cigarettes, etc.

What is the Difference Between Polyethylene Glycol and Propylene Glycol?

Polyethylene glycol and propylene glycol are important organic compounds. Polyethylene glycol is a polymer compound derived from petroleum, and the structure can be expressed as H-(O-CH₂-CH₂)_n-OH, while propylene glycol is a viscous, colorless liquid having the chemical formula CH3CH(OH)CH2OH. The key difference between polyethylene glycol and propylene glycol is that polyethylene glycol is a polymer material, whereas propylene glycol is a single molecular compound that can be named a diol.

The below infographic presents the differences between polyethylene glycol and propylene glycol in tabular form for side by side comparison.

Summary – Polyethylene Glycol vs Propylene Glycol

Polyethylene glycol is a polymer compound derived from petroleum, and the structure can be expressed as H-(O-CH₂-CH₂)_n-哦。丙二醇是一种粘性，无色的液体，具有化学配方CH3CH（OH）CH2OH。The key difference between polyethylene glycol and propylene glycol is that polyethylene glycol is a polymer material, whereas propylene glycol is a single molecular compound that can be named a diol.

Reference:

1.“”Polyethylene Glycol 3350: MEDLINEPLUS Drug Information.”MedlinePlus, U.S. National Library of Medicine.

Image Courtesy:

1.“”PEG Structural Formula V1” By Jü – Own work (Public Domain) via Commons Wikimedia
2. “丙二醇化学结构” (CC BY-SA 3.0)via Commons Wikimedia