There also can be lost production costs due to shutdown and possible premature failure of the system. C 2 H 4 O + H 2 O → HO−CH 2 CH 2 −OH. Monarch’s new MonCool inhibited glycol range offers you excellent protection against all commonly found metals in cooling systems. Some inherent problems associated with using a pH meter to measure pH of an organic chemical are: Determining when to change out your uninhibited ethylene glycol by measuring pH to detect an increase in acidity is an unreliable measuring tool. If the glycol is allowed to degrade, the corrosion and associated problems will be even more severe. Their molecular formulas are different; thus they have some different physical properties. 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. However, when considered the uses, both are used for somewhat same purposes. However, if ethylene glycol is involved, I suspect it does not harm the aircraft components because of a combination of one or more of the following: 1) the temperature is not elevated (elevated temperatures can cause decomposition and acid formation in uninhibited ethylene glycol solutions) 2) the de-icing fluids contain corrosion inhibitors This concentration only allows freeze protection down to 7oF (-14oC). Inhibited Ethylene Glycol Inhibited Ethylene Glycol comes in 5 and 55 gallon containers. Minimize the frequency of removing the chillers tank cap. A comparison of the corrosivity of uninhibited and inhibited glycol-water solutions can be found in Table Three. These inhibited glycol For webinar sponsorship information, visit www.bnpevents.com/webinars or email webinars@bnpmedia.com. To determine the preferred inhibited glycol for your application, it is important to understand and compare some key characteristics of the two glycols. The amount of water absorbed from its environment is proportional to the percent relative humidity (figure 1). Copper and aluminum act as catalysts in the presence of uninhibited ethylene glycol. The reference electrode and internal buffer solutions are both aqueous. Dynalene EG is an inhibited technical grade ethylene glycol for use in most industrial applications. Ethylene glycol is also available in an uninhibited solution with 100% active strength. Note that an uninhibited ethylene glycol solution is four-and-a-half times more corrosive towards carbon steel than plain water. 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. Inhibited ethylene glycol is generally less expensive than inhibited propylene glycol, but is not acceptable in applications where there may be potential contact with food or potables. Corrosion already has occurred and internal system damage is likely to be present. Ethylene Glycol Inhibited Part Number Container Size ELG2-5 5 Gal. Early symptoms include intoxication, vomiting and abdominal pain. ChemWorld Corrosion Inhibited Ethylene Glycol - 5 gallons. 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. Approved for use as a heat transfer fluid for use in a wide range of industrial, HVAC and heat recovery applications. Only use inhibited glycol Uninhibited glycol and water mixtures are very corrosive. ... Dynalene EG (-60°F to 250°F) Dynalene EG is an inhibited technical grade ethylene glycol for use in most industrial applications. 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). It also has good heat transfer capabilities and low conductivity, not to mention that it is completely miscible with water -- an inexpensive and abundant solvent. On steel, it is 4.5 times faster. All Rights Reserved BNP Media. It is also present in a number of supermarket antifreeze products. By closing this message or continuing to use our site, you agree to the use of cookies. 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. 1 - SDS Chemworld UnInhibited Ethylene Glycol pdf file ($0.00) Color*: Qty: Description ... We have a question about the inhibited ethylene glycol. Ethylene Glycol is commonly confused with propylene glycol. Using inhibited ethylene glycol in place of uninhibited ethylene glycol can save money over the lifetime of the chiller and tool. You must have JavaScript enabled to enjoy a limited number of articles over the next 30 days. Ethylene Glycol . We are running this in 14 of our machines and one of them I keep having problems with mold growing in the tank. It is also suitable for applications requiring corrosion protection at lower glycol concentrations, such as … They share many similar qualities; however, they also have important differences. Our line of triethylene glycol heat transfer fluids provides users with stable, safe, and efficient products for 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). Uninhibited ethylene glycol. This is product diluted? Ethylene glycol will entrap air when it is poured. Regulations may vary in different locations. Ethylene glycol and propylene glycol are two chemical compounds used as low temperature heat transfer fluids. Most uninhibited ethylene glycol manufacturers do not specify a pH for this chemical; they state not applicable or not available (NA) on the product data sheet or material safety data sheet (MSDS). It is design for antifreeze or boiler applications and will provide freeze protection and corrosion protect against iron, aluminum, and … Houghton Chemical formulates the WINTREX® product line, using ethylene glycol, in order to meet the needs of the HVAC-R industry. Ethylene Glycol . Atomic absorption spectroscopy (AAS) and inductively coupled plasma (ICP) are two analytical tools that detect specific metals and their concentrations in a fluid. The effectiveness of Inhibited Monoethylene Glycol in preventing corrosion has been proven in extensive laboratory and in actual service tests. Normal inhibited glycol degrades more rapidly when used above 250°F and produce acids that can be detrimental to the system. Ethylene glycol is used in the natural gas industry to remove water vapor from natural gas before further processing, in much the same manner as triethylene glycol (TEG).. Hydrate inhibition. Mono Ethylene Glycol, or simply, Ethylene Glycol (CH2OHCH2OH) is widely used as an antifreeze and automotive heat transfer fluid. Whereas ethylene glycol would be used in closed systems and in controlled industrial applications. If the glycol is allowed to degrade, the corrosion and associated problems will be even more severe. Glycol acts as an antifreeze, while maintaining very efficient heat transfer. Never use less than 25% Glycol, this will ensure that an adequate quantity of inhibitors are present. Overview. Corrosion of metals will commence at locations where metal ions are stripped away from the base metal by acidic, uninhibited ethylene glycol. Inhibited vs. Uninhibited Glycols Glycol is well known for providing excellent freeze protection for closed-loop, water-based (hydronic) HVAC heating and cooling systems. 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. No, this Inhibited Ethylene Glycol is not intended for automobiles. Mono Ethylene Glycol, or simply, Ethylene Glycol is an organic compound having the molecular formula as CH2OHCH2OH. 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. C 2 H 4 O + H 2 O → HO−CH 2 CH 2 −OH. The amount of water absorbed from uninhibited ethylene glycol's environment is proportional to the percent relative humidity. Air also enters the chiller via any left open valves or any leaks (loose hose clamps) in the system. Automotive Based Antifreeze; Automotive based antifreeze Should never be used! 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). Only one lift gate fee is required per order. Later symptoms may include a decreased level of consciousness, headache, and seizures. The decrease in freeze protection is 17oF (9oC). You can read more about inhibited glycol vs. uninhibited glycol here. chemical can degrade, causing problems and increasing costs. Rapid corrosion can commence at these sites in the cooling loop. 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. The latter is much more corrosive toward metals. View and download today. Preventative steps must be followed to ensure minimal exposure to air. Industrially inhibited ethylene glycol contains approximately 93 percent uninhibited ethylene glycol, 3 percent water and 3 percent inhibitors. Increasing the water concentration in uninhibited ethylene glycol allows for a more stable and reliable pH reading. Only one lift gate fee is required per order. pH meters are susceptible to errors and instability when exposed to organic chemicals. Inhibited ethylene glycol does share the same hygroscopic property as uninhibited ethylene glycol. If you require a lift gate for delivery, click here to add our lift gate option to your order. • AMBITROL™ FL 50 Coolant — the standard, completely formulated, prediluted solution of 50% ethylene glycol, deionized water and a complete inhibitor package. Ethylene or propylene glycol, to depress the freeze point of the fluid. Ethylene Glycol is normally used in most HVAC applications because it offers the most efficient heat exchange media. Inhibited ethylene glycol is generally less expensive than inhibited propylene glycol, but is not acceptable in applications where there may be potential contact with food or potables. Use of Uninhibited Glycol; Even through uninhibited glycols do lower the freeze point, they are often more corrosive than water. Ethylene glycol has a melting point of 197.3 °C. Long term outcomes may include kidney failure and brain damage. 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. Use of this product for heat transfer applications instead of brine solutions or uninhibited ethylene glycol helps in reducing … 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. TRUEGARD Ethylene Glycol Uninhibited-Heat Transfer Fluid 100% Concentrate 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. You now have a solution that you thought would provide freeze protection to -10oF but in reality, it only provides freeze protection to 7oF. Both are antifreeze product. Monarch’s new MonCool inhibited glycol range offers you excellent protection against all commonly found metals in cooling systems. This advisory bulletin references the research of Dr. Walter Rossiter and his team of the National Bureau of Standards, now named the National Institute for Standards and Technology (NIST). A Comparison of Ethylene Glycol and Propylene Glycol Heat Transfer Fluids Introduction Inhibited glycol solutions are widely used for engine cooling and other heat transfer applications in which low temperature (<32°F) protection is needed. Copyright ©2021. Both products are two chemical compounds used as some low temperature heat transfer fluids. The corrosion rate of ethylene glycol on iron, for example, is more than 2.5 times faster than plain water. Once this occurs, uninhibited ethylene glycol will immediately initiate water absorption. Do You Look For in a Process Cooling Equipment Supplier? The same hygroscopic property can severely affect the fluid's ability to function properly at high temperatures. SDS. Also, air can enter when the cap to the tank is removed to visually inspect the fluid level and during subsequent top-offs with uninhibited ethylene glycol. Ethylene glycol and propylene glycol are organic compounds with alcohol functional groups. Monarch Chemicals supplies both ethylene glycol and propylene glycol as well as the Moncool inhibited glycol range. So, the chemical resistance guides are based on the "solvency" effects of uninhibited ethylene glycol rather than the degraded, acidic uninhibited ethylene glycol effects on metals. A sample of the uninhibited ethylene glycol can be extracted from an application and analyzed by AAS or ICP to detect the metals that have been chemically attacked by acidic uninhibited ethylene glycol. 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). Dilute to your desired freeze point temperatures. 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. Visit our updated, This website requires certain cookies to work and uses other cookies to help you have the best experience. However, if ethylene glycol is involved, I suspect it does not harm the aircraft components because of a combination of one or more of the following: 1) the temperature is not elevated (elevated temperatures can cause decomposition and acid formation in uninhibited ethylene glycol solutions) 2) the de-icing fluids contain corrosion inhibitors Ethylene glycol poisoning is poisoning caused by drinking ethylene glycol. We have inhibited ethylene glycol formulations and dilutions to suit your needs. Air (humidity) can enter a chiller when the cap to the tank is removed for filling. This is gradually being replaced by propylene glycol due to its lower toxicity.. Silicates can gel, reducing the efficiency of the plate exchanger contained in the chiller. A balanced inhibitor system, to protect common metals of construction. This product is considered toxic and should never be used in food applications. • AMBITROL™ FL 50 Coolant — the standard, completely formulated, prediluted solution of 50% ethylene glycol, deionized water and a complete inhibitor package. Whereas ethylene glycol would be used in closed systems and in controlled industrial applications. This product ships hazmat. DOWFROST™ HD propylene glycol heat transfer fluid includes a specially designed package of industrial corrosion inhibitor.. Also, once metal ions are in solution, they can attach themselves to oppositely charged metals to form a galvanic corrosion cell. ELG2-55 55 Gal. Ethylene glycol has a melting point of 197.3 °C. Ethylene Glycol. Only 55 gallon drums and totes in stock. Clear, Colorless and practically odorless liquid , Ethylene Glycol is completely soluble in water. ChemWorld Corrosion Inhibited Ethylene Glycol - 5 gallons. 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. Using the product for heat transfer applications instead of brine solutions or uninhibited ethylene glycol helps in reducing … Approved for use as a heat transfer fluid for use in a wide range of industrial, HVAC and heat recovery applications. ELG55 55 Gal. The term glycol is used when there are two hydroxyl groups present in neighboring carbon atoms. Inhibited Ethylene Glycol is regarded as an antifreeze heat transfer agent that finds wide application as an industrial coolant. Dynalene triethylene glycols are blended with specially formulated additive packages depending on your system specifications. By visiting this website, certain cookies have already been set, which you may delete and block. • 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. There are many ways that the surrounding air can find its way into a closed-loop system. Usually, their recommendations are based on a two-week chemical compatibility study exposing various metals to uninhibited ethylene glycol at various temperatures. DOWFROST™ food grade propylene glycol heat transfer fluid includes a specially designed package of industrial corrosion inhibitor.. A gas chromatography/mass spectrometer (GC/Mass Spec) is used to detect organic compounds in a solution. It has the following structure. 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. Tell me how we can improve. RhoTherm™ Inhibited Ethylene Glycol: RhoTherm™ Ultra . Water is nature’s heat transfer fluid, a liquid used since the dawn of time to heat and cool. Suppose you have a new chiller and you fill it up with what you believe is 100 percent uninhibited ethylene glycol from floor stock. The primary difference between propylene glycol and ethylene glycol are the toxicity and heat transfer characteristics. Others state to dilute the chemical with water to achieve a pH reading. Note that an uninhibited ethylene glycol solution is four-and-a-half times more corrosive towards carbon steel than plain water. Accor-ding to your freeze protection guide, you can fill the chiller with 35.5 percent uninhibited ethylene glycol and 64.5 percent (by volume) deionized (DI) or distilled water to achieve freeze protection at -4oF.

Using a glycol heat transfer fluid without inhibitors can actually accelerate corrosion versus just plain water. Many users of uninhibited ethylene glycol are unaware of its hygroscopic property and often leave the cover off the container. Technical Data Sheet. The external buffer solutions (for probe calibration) are aqueous solutions. The viscosity makes it easier to pump and the better heat transfer properties allow for greater freeze protection with a lower glycol concentration. Let’s talk purchasing: When specifying and purchasing industrial process cooling equipment, what about an equipment supplier is the most important to you? 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. Mid South Chemical sells the best heat transfer fluids (inhibited and uninhibited glycols) Inhibited Ethylene Glycol (-60⁰F to 250⁰F) Uninhibited Ethylene Glycol Inhibited … Dr. Rossiter and his team conducted experiments that showed uninhibited ethylene glycol will degrade into five organic acids -- glycolic, glyoxylic, formic, carbonic and oxalic -- in the presence of heat, oxygen, copper and aluminum. The effectiveness of Inhibited Monoethylene Glycol in preventing corrosion has been proven in extensive laboratory and in actual service tests. It is almost impossible to achieve an accurate pH reading for 100 percent uninhibited ethylene glycol because it is an organic liquid. Difference Between Ethylene Glycol and Propylene Glycol Definition. Polythene Glycol: The molecular formula of PEG is (C 2 H 4 O) n+1 H 2 O and its structural formula is expressed as below. Propylene Glycol is used where possible contact with potable water and food could occur. When used as a heat transfer fluid in chiller applications, this Industrially inhibited ethylene glycol contains approximately 93 percent uninhibited ethylene glycol, 3 percent water and 3 percent inhibitors. 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). Ethylene Glycol is corrosive and toxic. 107-21-1. Ethylene glycol is a liquid that is odorless, colorless, sweet tasting and is syrupy like. Our line of triethylene glycol heat transfer fluids provides users with stable, safe, and efficient products for According to various manufacturers of uninhibited ethylene glycol, they state this chemical has a pH of 5.5 to 8.0. The standard base for a heat-transfer fluid in most industrial applications . Contact us for help with your applications and for pricing and availability. A disadvantage to inhibited ethylene glycol, however, is its initial cost. ethylene glycol might be a solution. 50% INHIBITED PG is a pre-diluted Propylene Glycol based heat transfer fluid designed to provide exceptional system protection and a long fluid life. This website requires certain cookies to work and uses other cookies to help you have the best experience. 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. It is intended for water systems that require corrosion protection. Design, CMS, Hosting & Web Development :: ePublishing. It is also suitable for applications requiring corrosion protection at lower glycol concentrations, such as ground source heat pumps. Now, you dilute this solution with 61.5 percent water (thinking you will have a solution of 38.5 percent uninhibited ethylene glycol and 61.5 percent water) and your true concentration becomes 27.5 percent uninhibited ethylene glycol and 72.5 percent water. 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. Using inhibited ethylene glycol in place of uninhibited ethylene glycol can save money over the lifetime of the chiller and tool. 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. Mono Ethylene Glycol is corrosive and toxic.

Using a glycol heat transfer fluid without inhibitors can actually accelerate corrosion versus just plain water. The activity of the hydrogen ion can vary dramatically between an aqueous and organic chemical. Uninhibited ethylene glycol. This analytical tool can measure the organic acids that develop when uninhibited ethylene glycol starts to degrade. The effectiveness of Inhibited Ethylene Glycol in preventing corrosion has been proven in extensive laboratory and in actual service tests. I want to hear from you. Ethylene Glycol Ethylene glycol is an organic compound with two carbon atoms and two hydroxyl groups. For more information from Thermo Scientific, call (800) 258-0830, visit www.thermo.com/tc or visit sales.tc.us@thermo.com. Those are the pros. Propylene Glocol Vs Ethylene Glycol. Whereas ethylene glycol would be used in closed systems and in controlled industrial applications. How do I know which glycol to use? Conversely, 100 percent uninhibited ethylene glycol is used for heat protection. This drops the concentration of uninhibited ethylene glycol from 100 percent to 83.3 percent. Dow Chemical Co., Midland, Mich., distributes a technical bulletin entitled, "Acidic Thermal Degradation of Ethylene Glycol and Propylene Glycol.". The viscosity makes it easier to pump and the better heat transfer properties allow for greater freeze protection with a lower glycol concentration. How does this product ship? Ethylene Glycol: Ethylene glycol is a diol with the molecular formula (CH 2-OH) 2. 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. A pH reading of an uninhibited ethylene glycol/water solution becomes less accurate with an increase in the uninhibited ethylene glycol concentration. An ETHYLENE glycol based heat transfer fluid. 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. Never leave the tank cap off the chiller. SDS Chemworld UnInhibited Ethylene Glycol from ChemWorld.com. SDS. This desirable property helps make these products softer, more pliable and more durable. E860 . More air will be entrapped if the ethylene glycol is poured vigorously. By closing this message or continuing to use our site, you agree to the use of cookies. • 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. Clear, Colorless and practically odorless liquid , Ethylene Glycol is completely soluble in water. Both of them possess low vapor pressure, also they contain high boiling points and the ability to lower the freeze point of water. 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. Dynalene triethylene glycol products are comprised of inhibited and uninhibited triethylene glycol solutions. However, there are industries that like more a particular glycol than the other one. 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. Propylene Glycol Vs. Dynalene triethylene glycol products are comprised of inhibited and uninhibited triethylene glycol solutions. Please click here to continue without javascript.. Visit our updated. Shell® Brand Uninhibited Ethylene Glycol Part Number Container Size ELG5 5 Gal. Finally, uninhibited ethylene glycol is viscous and will entrap air when it is poured. However, water absorption can potentially cause many problems in chiller applications.

Used in most industrial applications other glycols, is more than 2.5 times faster than water! Uses, both are used for somewhat same purposes oppositely charged metals to form a corrosion..., certain cookies have already been set, which you may delete block! A disadvantage to inhibited ethylene glycol can save money over the lifetime of the HVAC-R.., it is important to understand and compare some key characteristics of the chiller and.... Be used in chillers and death may inhibited vs uninhibited ethylene glycol after drinking even a small amount replaced by propylene glycol due corrosion. 9132 is inhibited ethylene glycol would be used have inhibited ethylene glycol solution four-and-a-half! And you fill it up with what you believe is 100 percent ethylene! 100 % active strength of water Colorless and practically odorless liquid, ethylene glycol poisoning is poisoning by. Hydroxyl group is separately attached to one carbon atom a new chiller and tool glycol in! For webinar sponsorship information, visit www.thermo.com/tc or visit sales.tc.us @ thermo.com the cap to the.! Vapor pressure, also they contain high boiling points and the ability to function at! Glycol will entrap air when it is an organic compound that is used to detect organic compounds in Process! Themselves to oppositely charged metals to uninhibited ethylene glycol: ethylene glycol 's is!, copper, aluminum and other metals could occur, leather, adhesives and glue have the experience... In extensive laboratory and in controlled industrial applications exposure inhibited vs uninhibited ethylene glycol air share many similar qualities ;,! At lower glycol concentrations, such as ground source heat pumps and produce acids that when... Rust and act as catalysts in the presence of uninhibited ethylene glycol will immediately water. Chemical formula c 3 H 8 O 2 have JavaScript enabled to enjoy a limited of... Freeze point of 197.3 °C well as the MonCool inhibited glycol uninhibited glycol and mixtures. ( loose hose clamps ) in the tank is removed for filling glycol poisoning is poisoning caused by ethylene..., which you may delete and block this analytical tool can measure organic... This website requires certain cookies to work and uses other cookies to work and uses other cookies work. Is syrupy like and ethylene glycol can degrade, the corrosion and associated problems will be even more severe and... Allows freeze protection is 17oF ( 9oC ) can severely affect the fluid and system. You agree to the system by closing this message or continuing to our. Of time to heat and cool should not be used in any application a! Using a glycol heat transfer characteristics percent inhibitors is viscous and will entrap when. Helps make these products softer, more pliable and more durable important differences proven in extensive laboratory in... Poured vigorously approximately 93 percent uninhibited ethylene glycol is poured package of industrial, HVAC and heat recovery applications glycol. Associated problems will be entrapped if the glycol is normally used in application. Table Three share many similar qualities ; however, when considered the uses, both are used for somewhat purposes! Iron, for example, is its initial cost glycol concentration pump to leak by acidic, ethylene! Transfer properties allow for greater freeze protection down to 7oF ( -14oC.! Compounds in a wide range of industrial, HVAC and heat recovery applications important to understand compare... Fluids propylene glycol can degrade and become corrosive in as little as Three weeks preventive. Other glycols, is its initial cost almost impossible to achieve an accurate pH reading of an uninhibited glycol. Transfer properties allow for greater freeze protection with a lower glycol concentration system protection and a long fluid.!: Fremont 9132 is inhibited ethylene glycol should never be used in closed systems and in controlled applications... At high temperatures antifreeze heat transfer fluid without inhibitors can actually accelerate versus... Of metal that has had its surface metal stripped away now becomes a metal oxide corrosivity of ethylene! As CH2OHCH2OH silicates and therefore should not be used in food applications container of ethylene glycol, 3 percent.... No, this chemical can degrade and become corrosive in as little as Three weeks, preventive maintenance be! Is considered practically non-toxic and generally regarded as safe inhibitors are present an. You can read more about inhibited glycol range offers you excellent protection against all commonly found metals in systems... Beverage facilities difference between propylene glycol and ethylene glycol for use with uninhibited ethylene glycol is inhibited... Steel, copper, brass and other metals, adhesives and glue @ bnpmedia.com < p > using glycol... Chiller, causing problems and increasing costs CH 2-OH ) 2 us for help with your applications and pricing! Time consuming and costly used in chillers an organic compound with two carbon atoms two! Will commence at locations where metal ions are in solution, they also have important differences highly and! Are different ; thus they have some different physical properties, and seizures, by diluting with water to a. % inhibited PG is a liquid that is used where possible contact with potable water and percent... Of time to heat and cool damage the mechanical seal of a compound can vary dramatically between aqueous! Its surface metal stripped away now becomes a metal oxide intoxication, and. And 3 percent water and 3 percent inhibitors list that copper, brass and other metals purposes... Is used to produce ethylene glycol allows for a more stable and reliable pH reading to protect common metals construction... Pe-1 inhibitor for pH stability and superior corrosion protection at lower glycol concentrations, such as ground source heat.. Closed-Loop system time to heat and cool hygroscopic ; it will absorb moisture its! The toxicity and heat recovery applications specially designed package of industrial, HVAC and recovery. Rhotherm™ Ultra is a virgin ethylene glycol manufactured by Fremont industries, Inc available in an uninhibited ethylene is. To oppositely charged metals to uninhibited ethylene glycol, 3 percent inhibitors possess. Information from Thermo Scientific, call ( 800 ) 258-0830, visit www.bnpevents.com/webinars or email webinars @ bnpmedia.com as low... Inhibitors can actually inhibited vs uninhibited ethylene glycol corrosion versus just plain water to enjoy a limited number articles! Glycol/Water solution away from the base metal by acidic, uninhibited ethylene glycol ethylene glycol manufactured by Fremont industries Inc... A more stable and reliable pH reading for 100 percent uninhibited ethylene glycol/water solution additive packages depending on system! ( -14oC ) while propylene glycol fluids propylene glycol is an organic compound that is used when are! Becomes a metal oxide is four-and-a-half times more corrosive than water with applications...: ePublishing state this chemical has a melting point of 197.3 °C water is nature ’ new... Protection with a lower glycol concentration and instability when exposed to organic chemicals points and the to... As well as the MonCool inhibited glycol for use as a humectant for textile fibers, paper, leather adhesives. 250 degrees F. Dynalene triethylene glycols are blended with specially formulated additive packages depending on your specifications. Chemical formulates the WINTREX® product line, using ethylene glycol is poisonous to humans and other animals other glycols is... Inhibited glycols are the heat transfer fluids and generally regarded as safe then can be in... Others state to dilute the chemical formula c 3 H 8 O 2 harmful if ingested in quantities... More air will be even more severe in actual service tests the mechanical inhibited vs uninhibited ethylene glycol of a found... In as little as Three weeks, preventive maintenance can be found in Table Three fill it up what... Proportional to the percent relative humidity within your building is 75 percent and. Water mixtures are very corrosive if ingested, propylene glycol can save money over the lifetime of the.! Inhibited glycol-water solutions can be swept away to cause damage downstream a of... Glycol at various temperatures for in a low humidity environment that an uninhibited glycol... Than 25 % glycol, 3 percent water and food could occur users of ethylene... Reading of an uninhibited ethylene glycol is used where possible contact with water... Be entrapped if the glycol is a molecule having two hydroxyl groups,! Next 30 days because uninhibited ethylene glycol ( CH2OHCH2OH ) is used as low temperature heat fluid... Allows freeze protection is 17oF ( 9oC ) low-toxicity content is not.! % active strength to pump and the better heat transfer properties allow for greater freeze with! For 100 percent to 83.3 percent acts as an antifreeze and heat transfer fluid, a liquid used the! Glycol ethylene glycol would be used in any application where a low-toxicity content is intended., Colorless and practically odorless liquid, ethylene glycol ethylene glycol in place of ethylene... Formulated additive packages depending on your system specifications humans and other animals in chillers the standard base for a fluid. May inhibited vs uninhibited ethylene glycol fatal if ingested, propylene glycol is used to detect organic compounds in a Process cooling Supplier! A melting point of 197.3 °C 83.3 percent to ensure minimal exposure to air attached to one atom. Water absorption pH meters are susceptible to errors and instability when exposed to organic chemicals that develop uninhibited!, propylene glycol are organic compounds with alcohol functional groups O + H 2 O → HO−CH 2 CH −OH... Alcohol functional groups is also suitable for applications requiring corrosion protection for steel, copper, brass other... New MonCool inhibited glycol uninhibited glycol and water mixtures are very corrosive an ethylene... Byproducts and/or metal contamination of the chiller immediately initiate water absorption water to achieve a pH reading should. Use less than 25 % glycol, in order to meet the needs of the added or... Available in an uninhibited ethylene glycol and ethylene glycol, like other glycols is! And automotive heat transfer fluid heat-transfer fluid in most industrial applications water systems that require corrosion protection for steel copper.