Visit our updated, This website requires certain cookies to work and uses other cookies to help you have the best experience. At room temperature and pressure, ethylene glycol is a colorless and odorless liquid. this website. Propylene Glocol Vs Ethylene Glycol. However, in certain applications involving possible contact of the coolant with foods or beverages, it is recommended to use propylene glycol. In applications where toxicity is NOT a concern, ethylene glycol is often the heat transfer fluid of choice. It is a colorless, tasteless and odorless liquid that its main function is to absorb water. Water is nature’s heat transfer fluid, a liquid used since the dawn of time to heat and cool. 254 0 obj <>stream L'éthylène glycol et le polyéthylène glycol sont deux membres importants de la famille des glycol. Ethylene Glycol: IUPAC name for Ethylene glycol is Ethane-1,2-diol. endstream endobj startxref It freezes at 32°F (0°C) and boils at 212°F (100°C). Ethylene Glycol: Ethylene glycol is a diol with the molecular formula (CH 2-OH) 2. The main difference between ethylene glycol and propylene glycol is that ethylene glycol is toxic whereas propylene glycol is moderately toxic. Why propylene glycol versus ethylene glycol for winterization? Examples would be: Breweries, Wineries, and food processing plants. They are alcoholic compounds due to the presence of –OH groups. Question: Should I use ethylene glycol or propylene glycol in my Marine Engine’s Cooling system? Between the two ethylene glycol is a better heat transfer fluid than propylene glycol. At room temperature, it is a clear liquid. If you do not agree to the use of cookies, you should not navigate Let’s talk purchasing: When specifying and purchasing industrial process heating equipment, which about an equipment supplier is the most important to you? 2. An interesting fact about this particular product is that it can be used to create artificial smoke or fog used in firefighting or theatrical productions. Pumps head increased. Propylene glycol is less toxic and is considered when toxicity is a concern. Both of them possess low vapor pressure, also they contain high boiling points and the ability to lower the freeze point of water. Viscosity: lower: higher: Propylene glycol increases major head loss in the systems. However, there are industries that like more a particular glycol than the other one. It is miscible with water. A balanced inhibitor system, to protect common metals of construction. “Ethylene-glycol-3D-balls” By Ben Mills – Own work (Public Domain) via Commons Wikimedia2.