Minimize the frequency of removing the chillers tank cap. Ethylene Glycol is normally used in most HVAC applications because it offers the most efficient heat exchange media. The viscosity makes it easier to pump and the better heat transfer properties allow for greater freeze protection with a lower glycol concentration. At 50 percent relative humidity, 100 percent uninhibited ethylene glycol will absorb 20 percent water at equilibrium. Industrially inhibited ethylene glycol contains approximately 93 percent uninhibited ethylene glycol, 3 percent water and 3 percent inhibitors. Uninhibited ethylene glycol, like other glycols, is hygroscopic; it will absorb moisture from its environment. pH meters are susceptible to errors and instability when exposed to organic chemicals. By closing this message or continuing to use our site, you agree to the use of cookies. ELG2-55 55 Gal. Copper and aluminum act as catalysts in the presence of uninhibited ethylene glycol. Only 55 gallon drums and totes in stock. Uninhibited ethylene glycol. Keith Wheeler was an engineer at Thermo Electron Corp. (now Thermo Scientific, part of Thermo Fisher Scientific), Newington, N.H., manufacturers of temperature control systems, chillers, water baths and other precision liquid temperature control devices. Ethylene Glycol should never be used in food and beverage facilities. Visit our updated. The decrease in freeze protection is 17oF (9oC). The relative humidity within your building is 75 percent, and the application temperature is -4oF (-20oC). This concentration only allows freeze protection down to 7oF (-14oC). Mono Ethylene Glycol, or simply, Ethylene Glycol is an organic compound having the molecular formula as CH2OHCH2OH. C 2 H 4 O + H 2 O → HO−CH 2 CH 2 −OH. Rapid corrosion can commence at these sites in the cooling loop. It is intended for water systems that require corrosion protection. The effectiveness of Inhibited Ethylene Glycol in preventing corrosion has been proven in extensive laboratory and in actual service tests. Long term outcomes may include kidney failure and brain damage. Mid South Chemical sells the best heat transfer fluids (inhibited and uninhibited glycols) Inhibited Ethylene Glycol (-60⁰F to 250⁰F) Uninhibited Ethylene Glycol Inhibited … Aliquot samples of each glycol solution tested in this program were taken at 1000 and more » 2000 h of exposure for chemical analysis and pH measurement. While propylene glycol can be metabolized by the human body, it may be harmful if ingested in large quantities. Propylene Glycol is used where possible contact with potable water and food could occur. Clear, Colorless and practically odorless liquid , Ethylene Glycol is completely soluble in water. Ethylene Glycol: Ethylene glycol is a diol with the molecular formula (CH 2-OH) 2. Copyright ©2021. Dynalene triethylene glycol products are comprised of inhibited and uninhibited triethylene glycol solutions. This can be used as a raw material in a number of different applications or as a heat transfer fluid, hydronic testing fluid, or a base material for e-cigarette fluid. Ethylene glycol poisoning is poisoning caused by drinking ethylene glycol. Note that an uninhibited ethylene glycol solution is four-and-a-half times more corrosive towards carbon steel than plain water. Using the product for heat transfer applications instead of brine solutions or uninhibited ethylene glycol helps in reducing maintenance costs and improves heat transfer efficiency. It is also present in a number of supermarket antifreeze products. Whereas ethylene glycol is highly toxic and may be fatal if ingested, propylene glycol is considered practically non-toxic and generally regarded as safe. RhoTherm™ Inhibited Ethylene Glycol: RhoTherm™ Ultra . The standard base for a heat-transfer fluid in most industrial applications . Typical problems associated with corrosion in a chiller cooling-loop system are clogging of a particulate filter, damage to mechanical seals and premature failure of the system. Ethylene glycol is an organic compound with two carbon atoms and two hydroxyl groups. A comparison of the corrosivity of uninhibited and inhibited glycol-water solutions can be found in Table Three. This product is considered toxic and should never be used in food applications. I want to hear from you. Turkey (TR), Serving: Pennsylvania (PA), Maryland (MD), Michigan (MI), Ohio (OH), Indiana (IN), Ontario (ON), Serving: Tennessee (TN), Virginia (VA), West Virginia (WV), North Carolina (NC), South Carolina (SC), Serving: Illinois (IL), Wisconsin (WI), Minnesota (MN), Iowa (IA), South Dakota (SD, Serving: Illinois (IL), Wisconsin (WI), Minnesota (MN), Nebraska (NE), North Dakota (ND), Serving: Washington (WA), Oregon (OR), Idaho (ID), California (CA), Alaska (AK), British Columbia (BC). Uninhibited ethylene glycol has been a popular heat transfer fluid choice in chillers for many years because of its initial low cost and excellent freeze and heat protection over a wide temperature range. By visiting this website, certain cookies have already been set, which you may delete and block. Preventative steps must be followed to ensure minimal exposure to air. It is also suitable for applications requiring corrosion protection at lower glycol concentrations, such as ground source heat pumps. The inhibitors serve two purposes: to protect various metals in the cooling loop from corroding and to buffer the uninhibited ethylene glycol so that it retards the degradation process. How do I know which glycol to use? Only one lift gate fee is required per order. Whereas ethylene glycol would be used in closed systems and in controlled industrial applications. Once this occurs, uninhibited ethylene glycol will immediately initiate water absorption. Use of Uninhibited Glycol; Even through uninhibited glycols do lower the freeze point, they are often more corrosive than water. Dynalene triethylene glycols are blended with specially formulated additive packages depending on your system specifications. Technical Data Sheet. The effectiveness of Inhibited Monoethylene Glycol in preventing corrosion has been proven in extensive laboratory and in actual service tests. This product ships hazmat. E860 . But, by diluting with water, is one measuring the pH of the added water or the pH of uninhibited ethylene glycol/water solution? View and download today. The amount of water absorbed from its environment is proportional to the percent relative humidity (figure 1). Only use inhibited glycol Uninhibited glycol and water mixtures are very corrosive. A gas chromatography/mass spectrometer (GC/Mass Spec) is used to detect organic compounds in a solution. We do not sell smaller quantities. To be safe, you fill the chiller with 38.5 percent uninhibited ethylene glycol and 61.5 percent DI or distilled water to achieve freeze protection down to -10oF (-23oC). Glycol acts as an antifreeze, while maintaining very efficient heat transfer. Automotive Based Antifreeze; Automotive based antifreeze Should never be used! Our line of triethylene glycol heat transfer fluids provides users with stable, safe, and efficient products for Mono Ethylene Glycol, or simply, Ethylene Glycol (CH2OHCH2OH) is widely used as an antifreeze and automotive heat transfer fluid. It is blended with Dynalene PE-1 inhibitor for pH stability and superior corrosion protection for steel, copper, brass and other metals. Monarch Chemicals supplies both ethylene glycol and propylene glycol as well as the Moncool inhibited glycol range. Later symptoms may include a decreased level of consciousness, headache, and seizures. Another extensive study on the degradation of uninhibited ethylene glycol was conducted by John Beavers and Ronald Diegle of Battelle, Columbus Laboratories.5 They concluded that degradation of uninhibited ethylene glycol occurred in absence of contact with various metals, but degradation was accelerated by the metals' presence. The amount of water absorbed from uninhibited ethylene glycol's environment is proportional to the percent relative humidity. You can read more about inhibited glycol vs. uninhibited glycol here. They share many similar qualities; however, they also have important differences. Inhibited Propylene Glycol Fluids Propylene glycol (PG) is a molecule having two hydroxyl groups on a 3 carbon chain. Early symptoms include intoxication, vomiting and abdominal pain. Others state to dilute the chemical with water to achieve a pH reading. According to various manufacturers of uninhibited ethylene glycol, they state this chemical has a pH of 5.5 to 8.0. Both of them possess low vapor pressure, also they contain high boiling points and the ability to lower the freeze point of water. For these reasons, inhibited glycols are the heat transfer fluid of choice for the HVAC industry. ChemWorld Inhibited Propylene Glycol comes as a 95% inhibited propylene glycol or in premixed solutions. There are many ways that the surrounding air can find its way into a closed-loop system. More air will be entrapped if the ethylene glycol is poured vigorously. All Rights Reserved BNP Media. Toxicity and death may occur after drinking even a small amount. Dynalene PG-XT uses additives that neutralize these acids keeping the fluid more stable and increasing the lifetime of the system while maintaining a high level of performance. Air also enters the chiller via any left open valves or any leaks (loose hose clamps) in the system. The term glycol is used when there are two hydroxyl groups present in neighboring carbon atoms. Ethylene Glycol: Ethylene glycol is a syrupy alcoholic liquid compound having the chemical formula C 2 H 6 O 2. Please click here to continue without javascript.. Corrosion already has occurred and internal system damage is likely to be present. If possible, open the container of ethylene glycol in a low humidity environment. Contact us for help with your applications and for pricing and availability. Ethylene glycol solutions became available in 1926 and were marketed as “permanent antifreeze” since the higher boiling points provided advantages for summertime use as well as during cold weather. A pH reading of an uninhibited ethylene glycol/water solution becomes less accurate with an increase in the uninhibited ethylene glycol concentration. Other uses Dehydrating agent. Do You Look For in a Process Cooling Equipment Supplier? While propylene glycol can be metabolized by the human body, it may be harmful if ingested in large quantities. Each hydroxyl group is separately attached to one carbon atom. Ethylene glycol is a molecule having two hydroxyl groups on a 2 carbon chain, making it less viscous and providing slightly better heat transfer properties than propylene glycol. Air (humidity) can enter a chiller when the cap to the tank is removed for filling. Using inhibited ethylene glycol in place of uninhibited ethylene glycol can save money over the lifetime of the chiller and tool. The latter is much more corrosive toward metals. Visit our updated, This website requires certain cookies to work and uses other cookies to help you have the best experience. If uninhibited ethylene glycol is not allowed to degrade (using inhibitors), then money is saved by less frequent maintenance to the cooling loop system (labor, parts and lost production costs) and change out of the fluid (labor, replacement fluid and lost production costs). This mechanical seal has been scored due to corrosion byproducts and/or metal contamination of the fluid. By closing this message or continuing to use our site, you agree to the use of cookies. Also, silicates can damage the mechanical seal of a pump found in a chiller, causing the pump to leak. If uninhibited ethylene glycol is not allowed to degrade (using inhibitors), then money is saved by less frequent maintenance to the cooling loop system (labor, parts and lost production costs) and change out of the fluid (labor, replacement fluid and lost production costs). It is ethylene glycol with CAS no. Propylene Glycol Vs. By visiting this website, certain cookies have already been set, which you may delete and block. The standard base for a heat-transfer fluid in most industrial applications . Many users of uninhibited ethylene glycol are unaware of its hygroscopic property and often leave the cover off the container. The inhibitors serve two purposes: to protect various metals in the cooling loop from corroding and to buffer the uninhibited ethylene glycol so that it retards the degradation process. TRUEGARD Ethylene Glycol Uninhibited-Heat Transfer Fluid 50/50 - 55 Gallon Drum Solutions in water provide freeze protection to below -60 degrees F and burst protection to -100 degrees F. Suitable applications: closed loop, water-based haul, process heating and cooling, food industry applications within temperature range. Only one lift gate fee is required per order. However, this is a reactive approach because if there is a high concentration of metals found in the fluid, this signifies that the uninhibited ethylene glycol already has degraded and has turned acidic. The section of metal that has had its surface metal stripped away now becomes a metal oxide. Increasing the water concentration in uninhibited ethylene glycol allows for a more stable and reliable pH reading. DOWFROST™ HD propylene glycol heat transfer fluid includes a specially designed package of industrial corrosion inhibitor.. Ethylene Glycol is widely used as an antifreeze and automotive heat transfer fluid. The dissociation of a compound can vary dramatically between an aqueous and organic chemical. It is almost impossible to achieve an accurate pH reading for 100 percent uninhibited ethylene glycol because it is an organic liquid. • AMBITROL™ CN Coolant — a concentrated, inhibited ethylene glycol coolant to be diluted with distilled (or deionized) water to concentrations ranging from 30% to 60% by volume. Propylene Glocol Vs Ethylene Glycol. Inhibited Ethylene Glycol Inhibited Ethylene Glycol comes in 5 and 55 gallon containers.

Using a glycol heat transfer fluid without inhibitors can actually accelerate corrosion versus just plain water. -60 degrees F to 250 degrees F. The IUPAC name of ethylene glycol is Ethane-1,2-diol. Our line of triethylene glycol heat transfer fluids provides users with stable, safe, and efficient products for The organic acids then will chemically attack copper and aluminum in as little as three weeks under the right conditions to form metal organic compounds in the fluid. Let’s talk purchasing: When specifying and purchasing industrial process cooling equipment, what about an equipment supplier is the most important to you? Check out the January 2021 edition of Process Cooling: Cryogenic industrial process cooling insulation considerations, cooling tower product roundup, industrial chillers, news and much more! ELG55 55 Gal. Technical Data Sheet. Ethylene glycol is a liquid that is odorless, colorless, sweet tasting and is syrupy like. If you require a lift gate for delivery, click here to add our lift gate option to your order. If you require a lift gate for delivery, click here to add our lift gate option to your order. The inhibitors serve two purposes: to protect various metals in the cooling loop from corroding and to buffer the uninhibited ethylene glycol so that it retards the degradation process. Their molecular formulas are different; thus they have some different physical properties. Regulations may vary in different locations. Uninhibited ethylene glycol. The effectiveness of Inhibited Ethylene Glycol in preventing corrosion has been proven in extensive laboratory and in actual service tests. SDS. Many chemical resistance guides list that copper, aluminum and other metals are acceptable for use with uninhibited ethylene glycol. This error can result in a system failure. Use of this product for heat transfer applications instead of brine solutions or uninhibited ethylene glycol helps in reducing maintenance costs and improves heat transfer efficiency. If the glycol is allowed to degrade, the corrosion and associated problems will be even more severe. Slowly pour ethylene glycol. There are, however, disadvantages inherent to uninhibited ethylene glycol, including: These disadvantages can lead to frequent fluid changing, which can cost users money in labor and parts. Automotive antifreeze typically contains silicates and therefore should not be used in chillers. This is product diluted? E860 . SDS. science behind its properties and why an industrially inhibited No, this Inhibited Ethylene Glycol is not intended for automobiles. Whereas ethylene glycol would be used in closed systems and in controlled industrial applications. Dow Chemical Co., Midland, Mich., distributes a technical bulletin entitled, "Acidic Thermal Degradation of Ethylene Glycol and Propylene Glycol.". Both uninhibited and inhibited ethylene (as well as propylene) glycols have been aged at temperatures up to 190/sup 0/C for over 2000 h continuously to date. There also can be lost production costs due to shutdown and possible premature failure of the system. Ethylene glycol has a melting point of 197.3 °C. The above research indicates that uninhibited ethylene glycol does not begin to degrade and become acidic until after three weeks under extreme conditions (212oF [100oC] and oxygen bubbling into the uninhibited ethylene glycol solution). If the environment on the floor is 75 percent relative humidity and the cap has been kept off of the container, the 100 percent uninhibited ethylene glycol can become 71.4 percent uninhibited ethylene glycol and 28.6 percent water.

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