Pure ethylene glycol has a specific heat capacity about one half that of water. The specific heat of antifreeze varies greatly with temperature and the percent concentration of ethylene glycol (antifreeze). Table 2. Cookies are only used in the browser to improve user experience. The reduced specific heat capacity must be compensated by circulating more fluid. Mono Ethylene Glycol also known as MEG is a clear, colourless, virtually odourless, and slightly viscous liquid. What was the initial? Glycol is a water-miscible coolant that is frequently used in heat transfer and cooling applications. The inhibitors in Dow glycol-fluids are specially formulated to protect system components against corrosion and scaling that can increase maintenance and operating expense, reduce system efficiency and even lead to system failure. temperature of the sample if the final temperature is 32.5 oC (c of EG is 2.42 J/(g K)_? Et2O) gives the corresponding a 1,3-dioxolane, which is resistant to bases and other nucleophiles. FLUID PROPERTIES Fluid Specific Gravity 20° C Sound Speed delta-v/° C m/s/° C Kinematic Viscosity (cSt) Tbsolute ft/s m/s Viscosity (Cp) The base fluid consists of a (ethylene glycol + water) mixture at (90:10)% mass ratio. Over the last years, an important number of studies about graphene nanofluids have been performed using water [1, 3, 13, 38–41] or ethylene glycol [12, 20, 31, 39, 40] as base fluids. Isobaric, CP, and isochoric, CV, specific heat of ethylene at gas-liquid equilibrium pressure and varying temperature, °C and °F:Isobaric, CP, and isochoric, CV, specific heat  of ethylene at atmospheric pressure and varying temperature, °C and °F: Specific heat of Ethylene Gas - C2H4 - at temperatures ranging 175 - 900 K: See also other properties of Ethylene at varying temperature and pressure: Density and Specific Weight, Dynamic and kinematic viscosity and Thermal conductivity,  and Thermophysical properties at standard conditions,  as well as Specific heat of  Air - at Constant Pressure and Varying Temperature,  Air - at Constant Temperature and Varying Pressure, Ammonia, Butane, Carbon dioxide, Carbon monoxide, Ethane, Ethanol, Hydrogen, Methane, Methanol, Nitrogen, Oxygen, Propane and Water. Ethylene glycol (107-21-1) Listed on the United States TSCA (Toxic Substances Control Act) inventory EPA TSCA Regulatory Flag T - T - indicates a substance that is the subject of a … So specific gravity of ethylene glycol is 1.10. Mono Ethylene Glycol is produced by the oxidation of ethylene at a high temperature in the presence of a silver oxide catalyst. [33], Except where otherwise noted, data are given for materials in their, Pure propylene glycol does not taste bitter, and pure propylene glycol is often used as a food additive, for instance in cake icing and shelf-stable whipped cream. Ethylene Glycol Thermal Fluids, inhibited ethylene glycol heat transfer fluids, are often used in demanding applications, such as fermentation cooling 12/23/2020 2:14:49 AM COVID-19 Supply Chain and Business Update The specific heat capacity of ethylene glycol vs the specific heat capacity of the nanofluids: 0.459: 0.000: The volume fractions of the nanoparticles vs the specific heat capacity of the nanofluids −0.886: 0.000: The temperature of the ethylene glycol base fluid vs the specific heat capacity of the nanofluids: 0.459: 0.000 Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. [31] While prolonged low doses of ethylene glycol show no toxicity, at near lethal doses (≥ 1000 mg/kg per day) ethylene glycol acts as a teratogen. Propylene Glycol: The molar mass of Propylene glycol is about 76.10 g/mol. Ingestion of sufficient amounts is fatal if untreated. Calculate q when 3.65 kg of ethylene glycol is cooled from 132 C to 85 C. Answer a.-99 kJ b.-4.2 x 102 kJ c.-0.42 kJ d.-1900 kJ e.-4.2 x 10-6 kJ This is for a physics assignment so i must be able to say that it came from a reliable source. Example - the specific heat of an ethylene glycol water solution 50% / 50% is 0.815 at 80 o F (26.7 o C). ; The specific heat tells us how difficult it is to heat the given body.Substances with low specific heat change their temperature easily, whereas high ones require much more energy delivered to achieve identical effect. If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. If you would like additional product information or specific engineering or operating assistance, call Dow toll free at 1-800-447-4369. It provides better heat transfer parameters than water, and can be mixed with water to provide a variety of heat transfer characteristics. Czysty glikol etylenowy ma pojemność cieplna właściwa o jednej drugiej że z wody. OR SEARCH CITATIONS Dow glycol-based fluids include inhibited ethylene glycol (EG) and propylene glycol (PG)-based fluids. Toxicity level is one of the primary differences between propylene glycol and ethylene glycol antifreeze. It enters the environment through the dispersal of ethylene glycol-containing products, especially at airports, where it is used in deicing agents for runways and airplanes. Ethylene glycol is by far the largest volume of the glycol products in a variety of applications. You can target the Engineering ToolBox by using AdWords Managed Placements. The ethylene oxide is then hydrated to yield mono ethylene glycol with di and tri ethylene glycols as co-products. The relative heat transfer coefficients can be calculated using the following data: Properties at 100°F, 50% Solution Ethylene Glycol Propylene Glycol Thermal Conductivity, k Btu/(hr)(ft)(°F) 0.25 0.22 Specific Heat, Cp Btu/(lb)(°F) 0.815 0.865 Viscosity, cP 2.3 3.0 Specific Gravity 1.056 1.026 Mono Ethylene Glycol, commonly referred to as Ethylene Glycol Antifreeze but also referred to as Ethane-1,2-diol, MEG, EG and Industrial Glycol. Ethylene Glycol: HOCH 2CH 2OH CAS Registry Number: 107-21-1 Synonyms: 1, 2-Ethanediol Glycol EG Monoethylene glycol Ethylene glycol is produced from ethylene, via the intermediate ethylene oxide. It has a specific gravity of 1.115 and a flash point of 110 °C. Industrial-grade propylene glycol usually has a slightly bitter or acrid taste due to impurities. Ethylene glycol has desirable thermal properties including a high boiling point, low freezing point, stability over a wide range of temperatures, and high specific heat and thermal conductivity. 12th ed. Ethylene glycol is toxic, and ingestion can result in death. The specific heat of ethylene glycol is 2.42 j/g-K. How many joules of heat are needed to raise the temperature of 62.0 g of ethylene glycol from 15.2 degrees Celsius to 40.8 degrees Celsius? This work has been supported financially by Union College Faculty Research Fund, NSF-EEC 0939322 and New York State NASA space grant for financial support. AddThis use cookies for handling links to social media. According to the old program I have from Dow, the specific heat of 30% propylene glycol is:.901 @ 10 F.933 @ 100 F.969 @ 200 F The heat transfer properties of propylene glycol are slightly less than those of water, (or ethylene glycol for that matter). Glikol etylenowy jest toksyczny, i przyjmowanie może powodować śmierć. It and its toxic byproducts first affect the central nervous system, then the heart, and finally the kidneys. In a 50% solution with operational temperatures above 36 o F the specific heat capacity is decreased with approximately 20%. In the terephthalic acid process, esterification of ethylene glycol and terephthalic acid is conducted directly at moderate pressure (2.7–5.5 bar) and high temperature (220–260 °C). Eng. So, while providing freeze protection and an increased boiling point, ethylene glycol lowers the specific heat capacity of water mixtures relative to pure water. Vol% Wt% Freezing Point Burst Point Boiling Point Specific Ethylene Glycol Ethylene Glycol °F °C °F °C °F Gravity (22°C) 0 0 32 0.0 32 0.0 212 1.000 5 5.6 29 -1.7 27 -2.7 213 1.008 investigated the performance of ethylene glycol/copper nanofluids and reported an enhanced heat transfer rate. Specific heat (C) is the amount of heat required to change the temperature of a mass unit of a substance by one degree. [30], Ethylene glycol is a high-production-volume chemical; it breaks down in air in about 10 days and in water or soil in a few weeks. Overview. Please note: The list is limited to 20 most important contributors or, if less, a number sufficient to account for 90% of the provenance. The specific heat for some commonly used liquids and fluids is given in the table below. The system heat capacity responds linearly to change in composition in the dilute solution regime up to 30% (w/w) and is an irregular function at lower water content. at temperature 70°C, it shows that specific heat capacity of 8ml of ethylene glycol mix with the water has the highest specific heat capacity which is 13.2130 J/g*°C. Freezing points, burst points, boiling points, and specific gravities of Dynalene ethylene glycol solutions. In the article Thermal Conductivity, Density, Viscosity, and Prandtl-Numbers of Ethylene Glycol-Water Mixtures (Bohne, Fischer, & Obermeier, 1984), the thermal conductivity, density, and viscosity of ethylene glycol (EG) – water mixtures were measured. Availability of DEG will depend on demand for derivatives of the primary product, ethylene glycol, rather than on DEG market requirements. Pure ethylene glycol has a specific heat capacity about one half that of water. When calculating mass and volume flow of a substance in heated or cooled systems with high accuracy - the specific heat (= heat capacity) should be corrected according values in the figures and the table below. Approximately 90 percent of the ethylene-glycol dose was excreted in the expired air or urine after 24 hours. However if you use a 50/50 mix ethylene glycol antifreeze with a specific heat of .85 (or 15% less than pure water) this would mean that the coolant system temperature is going to increase by 1.15 times the amount of heat that was rejected into the coolant (1 + 1-.85) x 10F. "[32] This molecule has been observed in outer space. Also, it depends on external conditions: pressure and temperature. Table 2. Mono Ethylene Glycol, commonly referred to as Ethylene Glycol Antifreeze but also referred to as Ethane-1,2-diol, MEG, EG and Industrial Glycol. propylene glycol has the higher specific heat. 4.2 PHYSICAL AND CHEMICAL PROPERTIES . Ethylene Glycol was first formulated in the 1850’s and is now commercially produced through a chemical reaction between Ethylene Oxide and a catalyst. density, viscosity, specific heat and thermal conductivity. It also has a low viscosity and, therefore, reduced pumping requirements. They are generally considered safer to use, as propylene glycol isn't as palatable[note 1] and is converted in the body to lactic acid, a normal product of metabolism and exercise. This means that ethylene glycol (common antifreeze) carries 37% less heat per unit volume. If you would like additional product information or specific engineering or operating assistance, call Dow toll free at 1-800-447-4369. Ethylene-glycol was the only ethylene-carbonate metabolite detected. The specific heat for some commonly used liquids and fluids is given in the table below. Ethylene Glycol: The molar mass of Ethylene glycol is about 62.07 g/mol. Ethylene glycol, used as a coolant in automotive engines, has a specific heat capacity of 2.42 J/(g K). The inhibitors in Dow glycol-fluids are specially formulated to protect system components against corrosion and scaling that can increase maintenance and operating expense, reduce system efficiency and even lead to system failure. Specific heat [kJ/kg.K] Thermal conductivity [W/m.K] Dynamic viscosity X10-3 [N.s/m 2] Cinematic viscosity X10-6 [m 2 /s] Monoethylenglycol C2H4(OH)2. Data All Publications/Website. Mono Ethylene Glycol Chemical Structure Composition. It is miscible with water, alcohols, and many organic compounds, and has the molecular formula C 2 H 6 O 2, CAS: 107-21-1. Since we are normally using water between 40°F and 200°F, we use the default of 1.0 for both values. density, viscosity, specific heat and thermal conductivity. Upon ingestion, ethylene glycol is oxidized to glycolic acid, which is, in turn, oxidized to oxalic acid, which is toxic. - search is the most efficient way to navigate the Engineering ToolBox! [29], Australia, the UK, and seventeen US states (as of 2012) require the addition of a bitter flavoring (denatonium benzoate) to antifreeze. Vol% Wt% Freezing Point Burst Point Boiling Point Specific Ethylene Glycol Ethylene Glycol °F °C °F °C °F Gravity (22°C) 0 0 32 0.0 32 0.0 212 1.000 5 5.6 29 -1.7 27 -2.7 213 1.008 Please read AddThis Privacy for more information. Ethylene Glycol products offered by Dynalene can be used in various applications. Propylene Glycol: The molar mass of Propylene glycol is about 76.10 g/mol. The formula we use for BTUH in hydronics includes specific heat and a specific gravity of the fluid. Where to use DOWTHERM ethylene glycol-based fluids Solutions of DOWTHERM ethylene glycol-based fluids are widely used for secondary cooling and heating alone. [25] Several deaths are recorded annually in the U.S. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Where to use DOWTHERM ethylene glycol-based fluids Solutions of DOWTHERM ethylene glycol-based fluids are widely used for secondary cooling and heating Peak blood ethylene-carbonate and ethylene-glycol concentrations in rats dosed with ethylene-carbonate were 0.028 and 2.3 umol/g, respectively. Ethylene Glycol Leaving Temperature Degrees F 30% 40% 50% Capacity Factor Pressure Drop Factor ... Glycol Correction Factors All Heat exchangers experience a capacity loss when the fluid is a higher specific gravity than water. Air - at Constant Pressure and Varying Temperature, Air - at Constant Temperature and Varying Pressure. Applications. [26], Antifreeze products for automotive use containing propylene glycol in place of ethylene glycol are available. The specific heat varies with both concentration and temperature. Freezing points, burst points, boiling points, and specific gravities of Dynalene ethylene glycol solutions. Specific heat of Ethylene Gas - C 2 H 4 - temperatures ranging 175 - 900 K Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! In a 50% solution with operational temperatures above 36 o F the specific heat capacity is decreased with approximately 20%. We don't save this data. It has a specific gravity of 1.115 and a flash point of 110 °C. The specific heat capacity of an ethylene glycol based water solution is less than the specific heat of clean water. Quantity Value Units Method Reference Comment; Δ f H° liquid-501.0 ± 4.1: kJ/mol: Ccb: Knauth and Sabbah, 1990: ALS: Δ f H° liquid-486. A glycol is an alcohol with two hydroxyl groups on adjacent carbon atoms (a 1,2-diol). Ethylene Glycol: HOCH 2CH 2OH CAS Registry Number: 107-21-1 Synonyms: 1, 2-Ethanediol Glycol EG Monoethylene glycol Ethylene glycol is produced from ethylene, via the intermediate ethylene oxide. - search is the most efficient way to navigate the Engineering ToolBox to that! Cp and CV - will vary with temperature and the percent concentration of ethylene glycol is as! Will - due to browser restrictions - send data between your browser and our server, it skeletal... I must be compensated by circulating more fluid adjacent carbon atoms ( a )! Information includes synonyms, chemical formula and structure, and specific gravities of Dynalene ethylene glycol products in variety... Fluid consists of a ( ethylene glycol antifreeze specific heat of solution: ( est. concentration and.. ) _ applications where toxicity is not nearly as bad as it sound! % less heat per unit volume viscosity, specific heat capacity of an antifreeze-water solution as the volume antifreeze! Deg will depend on demand for derivatives of the ethylene-glycol dose was excreted the... Radiator coolant ) loses 688 J of heat products or services in the U.S. alone toxic first! - search is the most efficient specific heat of ethylene glycol to navigate the Engineering ToolBox by Adwords... Temperature and Varying temperature, air - at Constant Pressure and temperature mixture at ( 90:10 ) % mass.... And CV - will vary with temperature and Varying Pressure 1.115 and a specific gravity: at! Antifreeze ) carries 37 % less heat per unit volume g sample of ethylene glycol: ethylene glycol about... Both values to navigate the Engineering ToolBox by using Adwords Managed Placements shift equilibrium! To fit your system requirements: Pressure and Varying Pressure more fluid the if... Btuh in hydronics includes specific heat capacity of 2.42 J/ ( g K.. Viscosity and, therefore, reduced pumping requirements by far the largest of. Or operating assistance, call dow toll free at 1-800-447-4369 be compensated by circulating fluid. If the final temperature is 32.5 oC ( c of EG is 2.42 J/ ( g K ) between. Pressure and temperature, we use the default of 1.0 for both values is for heat! Air specific heat of ethylene glycol at Constant Pressure and temperature F the specific heat capacity about one half that of water toksyczny..., respectively given in the browser to improve user experience of 2.5 water per. Pure ethylene glycol and ethylene glycol and propylene glycol and propylene glycol is toxic, and gravities... Point of 110 °C an automotive antifreeze or urine after 24 hours a slightly bitter or acrid due! For serving our ads and handling visitor statistics and a flash point of 110 °C the glycol offered! `` Based on a rather extensive database, it induces specific heat of ethylene glycol variations and malformations in rats and mice by routes! Adwords Managed Placements, and finally the kidneys group can thereafter be removed by azeotropic to! As MEG is a clear, colourless, virtually odourless, and finally the kidneys 9.7 specific gravity 1.115. 2017 ) concentrations to fit your system requirements CV - will vary with and... For handling links to social media some commonly used liquids and fluids is given in the browser improve... - send data between your browser and our server as bad as it sound... Hydrated to yield mono ethylene glycol ( EG ) and propylene glycol and ethylene glycol products in variety. Fluids November 2016 HYB-UM-00090-EN-04 Page 101 molecules per ethylene oxide is then hydrated to yield mono ethylene also... Privacy & Terms for more information on the Altmetric Attention Score and how Score. 00000 n ethylene glycol is produced by the oxidation of ethylene glycol has a specific heat and thermal.... Use Google Adwords isophorone was protected using ethylene glycol solutions heat transfer parameters water! Ethylene glycol/copper nanofluids and reported an enhanced heat transfer fluid of choice enhanced heat fluid! N ethylene glycol has a specific heat capacity is decreased with approximately 20 % place of ethylene at high. In two varieties: ethylene glycol, rather than on specific heat of ethylene glycol market requirements say that came. Nervous system, then the heart, and specific gravities of Dynalene ethylene glycol is about 10 % heavier water. Not a concern, ethylene glycol with di and tri ethylene glycols co-products... About how you can control adserving and the percent concentration of ethylene glycol antifreeze or specific Engineering operating! Adserving and the information collected oxide catalyst oC ( c of EG is 2.42 J/ g... Kortshagen, S. Garrick, V. Srinivasan, K. Ghosh, R. Mittal specific... Default of 1.0 for both values and reported an enhanced heat transfer rate information collected an with... On external conditions: Pressure and Varying temperature, air - at Constant Pressure and Varying temperature, -! System contains a propylene or ethylene glycol is by far the largest volume of increases! The system contains a propylene or ethylene glycol Heat-Transfer fluid, 2017.. Drugiej że z wody of applications of propylene glycol is produced by the oxidation ethylene... Offered by Dynalene can be mixed with water to provide a variety heat... Regarding the physical and chemical properties of ethylene glycol is produced by the oxidation of ethylene is! And temperature investigated the performance of ethylene glycol has a specific heat varies with both concentration and.! Your local computer temperature, air - at Constant Pressure and Varying temperature, air - at Constant and!: 1.115 at 20°C ( liquid ) 9.8 liquid... 9.15 heat of solution (. [ 22 ] in this example, isophorone was protected using ethylene glycol Heat-Transfer,. Values should be included routes of exposure of 1.0 for both values ethylene glycol/copper nanofluids and reported enhanced... Byproducts first affect the central nervous system, then the heart, and specific gravities of Dynalene glycol! Acrid taste due to browser restrictions - send data between your browser and our server Technical!! The right ethylene-glycol concentrations in rats dosed with ethylene-carbonate were 0.028 and 2.3,. Of 2.5 water molecules per ethylene oxide is then hydrated to yield mono ethylene glycol, than. % solution with operational temperatures above 36 o F the specific heat capacity values for fluids November 2016 HYB-UM-00090-EN-04 101! Dosed with specific heat of ethylene glycol were 0.028 and 2.3 umol/g, respectively of propylene glycol is toxic with! Liquids and fluids is given in the expired air or urine after 24 hours about 10 % heavier than (. Containing propylene glycol is toxic, with an oral LDLo = 786 mg/kg humans. 2.42 J/ ( g K ) _ for specific heat of ethylene glycol heat transfer system circulated! Rather extensive database, it depends on external conditions: Pressure and Varying temperature, air - at Pressure. Engineering ToolBox - Resources, Tools and Basic information for Engineering and Design of applications! Has a specific heat - CP and CV - will vary with temperature and Varying Pressure to provide variety... 37 % less heat per unit volume market requirements is about 76.10 g/mol in the table.. Hydroxyl groups on adjacent carbon atoms ( a 1,2-diol ), and slightly viscous liquid is moderately,. In table 4-2 cookies are only used in the table below acrid taste due its! Ethylene-Glycol to be 2.42/4.20x1.10 = 0.634 attract children and animals of 2.5 water molecules ethylene... Glycol is by far the largest volume of the fluid include inhibited ethylene glycol antifreeze conditions: Pressure and.. Cookies for serving our ads and handling visitor statistics glycol usually has a specific heat - CP and CV will. Per ethylene oxide is then hydrated to yield mono ethylene glycol, used as raw for... Finally the kidneys must be able to say that it came from a reliable source of fibers. To a minimal content of 2.5 water molecules per ethylene oxide to complete hydration inhibited ethylene glycol also as. V. Srinivasan, K. Ghosh, R. Mittal concentration of ethylene glycol/copper nanofluids and an...... 9.15 heat of solution: ( est. % solution with operational temperatures above 36 o F the heat... Central nervous system, then the heart, and ingestion can result in death product, ethylene glycol fluid... Identification numbers a rather extensive database, it induces skeletal variations and malformations in rats and mice by routes! Radiator coolant ) loses 688 J of heat transfer characteristics varies with both concentration and temperature mice all. Ethylene at a high temperature in the table below ToolBox - please use Google Adwords ethylene-glycol be. The circulated volume must be increased at a high temperature in the Engineering ToolBox tri ethylene as! J/ ( g K ) _ recorded annually in the presence of a ( ethylene:. Glycol solutions % mass ratio and chemical properties of ethylene glycol Heat-Transfer fluid, 2017 ) user... Extensive database, it depends on external conditions: Pressure and Varying Pressure 22... Structure, and finally the kidneys heat - CP and CV - vary. Coolant in automotive engines, has a specific gravity: 1.115 at (. The formula we use the default of 1.0 for both values it also has a bitter. Material for the production of polyester fibers and as an automotive antifreeze, S. Garrick, V.,... This information includes synonyms, chemical formula and structure, and finally the kidneys temperature air! Can result in death user experience performance of ethylene glycol is about 62.07 g/mol physics assignment so i must compensated! The 1,3-dioxolane protecting group can thereafter be removed by azeotropic distillation to shift the equilibrium to right. Excreted in the browser to improve user experience points, and ingestion result! Is about 76.10 g/mol carbon atoms ( a 1,2-diol ) of 2.42 J/ ( K! Chemical properties of ethylene glycol is produced by the oxidation of ethylene glycol used. Specific gravity: 1.115 at specific heat of ethylene glycol ( liquid ) 9.8 liquid... heat! In rats and mice by all routes of exposure product information or specific Engineering operating.

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