specific heat of ethylene glycol

It has a specific gravity of 1.115 and a flash point of 110 °C. As shown in Figure 4, the specific heat capacity of the antifreeze and water solution follows a decreasing trend as the volume of antifreeze increases. This is not nearly as bad as it might sound. Ethylene glycol is toxic, and ingestion can result in death. Air - at Constant Pressure and Varying Temperature, Air - at Constant Temperature and Varying Pressure. Industrial-grade propylene glycol usually has a slightly bitter or acrid taste due to impurities. NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) 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. 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 density, viscosity, specific heat and thermal conductivity. In order to systematically control the interfacial molecules, we have measured the specific heat capacity of ethylene glycol when it is physically confined in nano pores. Mono Ethylene Glycol Chemical Structure Composition. Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse! The ethylene oxide is then hydrated to yield mono ethylene glycol with di and tri ethylene glycols as co-products. As shown in Figure 4, the specific heat capacity of the antifreeze and water solution follows a decreasing trend as the volume of antifreeze increases. 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 means that ethylene glycol (common antifreeze) carries 37% less heat per unit volume. Availability of DEG will depend on demand for derivatives of the primary product, ethylene glycol, rather than on DEG market requirements. This is not nearly as bad as it might sound. Upon ingestion, ethylene glycol is oxidized to glycolic acid, which is, in turn, oxidized to oxalic acid, which is toxic. In a 50% solution with operational temperatures above 36 o F the specific heat capacity is decreased with approximately 20%. 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 vs Ethylene Glycol Toxicity. When engine coolant is a 50/50 mix (by volume) of ethylene-glycol in water, the resulting specific heat of the mixed fluid will be about 0.82. Table 2. However, many industrial facilities do not utilize these pure compounds as heat transfer media but Mono Ethylene Glycol also known as MEG is a clear, colourless, virtually odourless, and slightly viscous liquid. Freezing points, burst points, boiling points, and specific gravities of Dynalene ethylene glycol solutions. This means that ethylene glycol (common antifreeze) carries 37% less heat per unit volume. [24] The major danger is due to its sweet taste, which can attract children and animals. 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). Et2O) gives the corresponding a 1,3-dioxolane, which is resistant to bases and other nucleophiles. Only emails and answers are saved in our archive. When the system contains a propylene or ethylene glycol, these values should be included. Table 27: Specific heat capacity values for ethylene glycol/water Specific Heat Capacity Values for Fluids November 2016 HYB-UM-00090-EN-04 Page 101 . Specific heat (C) is the amount of heat required to change the temperature of a mass unit of a substance by one degree. density, viscosity, specific heat and thermal conductivity. Overview. See also tabulated values of specific heat of gases, food and foodstuff, metals and semimetals, common solids and other common substances as well as values of molar heat capacity of common organic substances and inorganic substances. 9.7 Specific Gravity: 1.115 at 20°C (liquid) 9.8 Liquid ... 9.15 Heat of Solution: (est.) "[32] This molecule has been observed in outer space. Top contributors to the provenance of Δ f H° of (CH2OH)2 (cr,l) The 4 contributors listed below account for 92.2% of the provenance of Δ f H° of (CH2OH)2 (cr,l). Approximately 90 percent of the ethylene-glycol dose was excreted in the expired air or urine after 24 hours. Overview. 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. Information regarding the chemical identity of ethylene glycol is located in Table 4-1. 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! 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. 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. 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. Ethylene glycol was purchased from Sigma-Aldrich with a mass purity of 99.5% while Milli-Q Grade water was produced with a resistivity of 18.2 MΩ cm at 298 K by … We offer products for the temperature range -60°F to 350°F with pH stability and superior corrosion protection for steel, copper, brass and other metals. The specific heat capacity of an antifreeze-water solution as the volume of antifreeze increases (Ethylene Glycol Heat-Transfer Fluid, 2017). Applications. 4.2 PHYSICAL AND CHEMICAL PROPERTIES . These applications will - due to browser restrictions - send data between your browser and our server. The specific heat  - CP and CV - will vary with temperature. In applications where toxicity is NOT a concern, ethylene glycol is often the heat transfer fluid of choice. A glycol is an alcohol with two hydroxyl groups on adjacent carbon atoms (a 1,2-diol). 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? [26], Antifreeze products for automotive use containing propylene glycol in place of ethylene glycol are available. See the article on. The formula we use for BTUH in hydronics includes specific heat and a specific gravity of the fluid. ± 3. kJ/mol: Ccb: Gardner and Hussain, 1972: ALS: Δ f … Pure ethylene glycol has a specific heat capacity about one half that of water. If you would like additional product information or specific engineering or operating assistance, call Dow toll free at 1-800-447-4369. Ethylene glycol, used as a coolant in automotive engines, has a specific heat capacity of 2.42 J/(g K). The 1,3-dioxolane protecting group can thereafter be removed by further acid hydrolysis. The density of ethylene glycol is higher than water - check the specific gravity (SG) table above, so the net impact on the heat transport capacity is reduced. Table 2. Glycol is a water-miscible coolant that is frequently used in heat transfer and cooling applications. 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. 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. If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. Ingestion of sufficient amounts is fatal if untreated. 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 Ethylene glycol is primarily used in antifreeze formulations (50%) and as a raw material in the manufacture of polyesters such as polyethylene terephthalate (PET) (40%). ± 3. kJ/mol: Ccb: Gardner and Hussain, 1972: ALS: Δ f … Heat of Combustion at 25°C -2,154.82 kJ/gmol -8,730.4 Btu/lb Heat of Vaporization at 1 atm 57.9 kJ/gmol 234.4 Btu/lb Molecular Weight 106.12 g/mol 106.12 g/mol Normal Boiling Point 244.9°C 1013.25 hPa 473°F 760 mm Hg Δ BP/Δ P (750 to 770 mm Hg) 0.052°C/mm Hg Normal Freezing Point … We don't save this data. 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). CAS :107-21-1. It and its toxic byproducts first affect the central nervous system, then the heart, and finally the kidneys. The specific heat for some commonly used liquids and fluids is given in the table below. It also has a low viscosity and, therefore, reduced pumping requirements. What was the initial? It has a specific gravity of 1.115 and a flash point of 110 °C. It provides better heat transfer parameters than water, and can be mixed with water to provide a variety of heat transfer characteristics. J. Chem. 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. Specific Heat Capacity Of Ethylene Glycol Mixed With Water - posted in Student: Hi, Ive googled around the web looking for the specific heat capacity of propylene glycol on water, (Ive found only the one for the ethylene glycol) Can someone tell me where to find a table for the specific heat capacity of propylene glycol on water? This makes specific heat for ethylene-glycol to be 2.42/4.20x1.10 = 0.634. The specific heat capacity of an antifreeze-water solution as the volume of antifreeze increases (Ethylene Glycol Heat-Transfer Fluid, 2017). The specific heat capacity of an ethylene glycol based water solution is less than the specific heat of clean water. alone. Dynalene’s Ethylene Glycol series is available in different concentrations to fit your system requirements. Ethylene Glycol was first formulated in the 1850’s and is now commercially produced through a chemical reaction between Ethylene Oxide and a catalyst. Information regarding the physical and chemical properties of ethylene glycol is located in Table 4-2. Glikol etylenowy jest toksyczny, i przyjmowanie może powodować śmierć. Ethylene Glycol products offered by Dynalene can be used in various applications. Where to use DOWTHERM ethylene glycol-based fluids Solutions of DOWTHERM ethylene glycol-based fluids are widely used for secondary cooling and heating In December 2012, US antifreeze manufacturers agreed voluntarily to add a bitter flavoring to all antifreeze that is sold in the consumer market of the US. Toxicity level is one of the primary differences between propylene glycol and ethylene glycol antifreeze. Ethylene glycol, also called ethane-1,2-diol, the simplest member of the glycol family of organic compounds. 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. Please read AddThis Privacy for more information. So, while providing freeze protection and an increased boiling point, ethylene glycol lowers the specific heat capacity of water mixtures relative to pure water. Find more information on the Altmetric Attention Score and how the score is calculated. See also tabulated values of specific heat of gases, food and foodstuff, metals and semimetals, common solids and other common substances as well as values of molar heat capacity of common organic substances and inorganic substances. A 27.7 g sample of ethylene glycol (EG, a car radiator coolant) loses 688 J of heat. For a heat transfer system the circulated volume must be increased . propylene glycol has the higher specific heat. If you can answer the question, please include your source or … [22] In this example, isophorone was protected using ethylene glycol with p-toluenesulfonic acid in moderate yield. [29], Australia, the UK, and seventeen US states (as of 2012) require the addition of a bitter flavoring (denatonium benzoate) to antifreeze. Production. This information includes synonyms, chemical formula and structure, and identification numbers. Dow glycol-based fluids include inhibited ethylene glycol (EG) and propylene glycol (PG)-based fluids. ; 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. Where to use DOWTHERM ethylene glycol-based fluids Solutions of DOWTHERM ethylene glycol-based fluids are widely used for secondary cooling and heating Since we are normally using water between 40°F and 200°F, we use the default of 1.0 for both values. [25] Several deaths are recorded annually in the U.S. In a 50% solution with operational temperatures above 36 o F the specific heat capacity is decreased with approximately 20%. Specific heat is a property of substance (the so-called material constant). You can target the Engineering ToolBox by using AdWords Managed Placements. Propylene Glycol: The molar mass of Propylene glycol is about 76.10 g/mol. The specific heat of antifreeze varies greatly with temperature and the percent concentration of ethylene glycol (antifreeze). Scott D. Barnicki "Synthetic Organic Chemicals" in Handbook of Industrial Chemistry and Biotechnology edited by James A. Kent, New York : Springer, 2012. 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 We don't collect information from our users. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Ethylene Glycol: Ethylene glycol is used as raw material for the production of polyester fibers and as an automotive antifreeze. The common name ethylene glycol literally means “the glycol derived from ethylene.” Please explain how to do this, id like the answer, but i need to … 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) [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. [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 PPG 9.20 SATURATED LIQUID DENSITY Temperature (degrees F) Pounds per cubic foot 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 65.700 The specific heat for some commonly used liquids and fluids is given in the table below. Water was removed by azeotropic distillation to shift the equilibrium to the right. Dow glycol-based fluids include inhibited ethylene glycol (EG) and propylene glycol (PG)-based fluids. 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. So specific gravity of ethylene glycol is 1.10. 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. Cookies are only used in the browser to improve user experience. Propylene Glycol: The molar mass of Propylene glycol is about 76.10 g/mol. If you would like additional product information or specific engineering or operating assistance, call Dow toll free at 1-800-447-4369. So specific gravity of ethylene glycol is 1.10. Ethylene Glycol: Ethylene glycol is used as raw material for the production of polyester fibers and as an automotive antifreeze. [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. Mono Ethylene Glycol – Fibre. The reduced specific heat capacity must be compensated by circulating more fluid. Ethylene-glycol was the only ethylene-carbonate metabolite detected. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. This makes specific heat for ethylene-glycol to be 2.42/4.20x1.10 = 0.634. Diethylene Glycol Technical Data: Date Created 6/4/2015 Date Updated 6/4/2015 Item Number Limitations of Warranty & Liability Seller warrants its product will meet the specifications listed herein and it has good title to the product, free and clear of all liens and Eng. - search is the most efficient way to navigate the Engineering ToolBox! 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. 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. AddThis use cookies for handling links to social media. 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. Google use cookies for serving our ads and handling visitor statistics. Ethylene glycol is by far the largest volume of the glycol products in a variety of applications. For a heat transfer system the circulated volume must be increased. 12th ed. Glycol comes in two varieties: ethylene glycol and propylene glycol. 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. 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 Pure ethylene glycol has a specific heat capacity about one half that of water. The base fluid consists of a (ethylene glycol + water) mixture at (90:10)% mass ratio. The breakpoint in solubility corresponds to a minimal content of 2.5 water molecules per ethylene oxide to complete hydration. Applications. 9.7 Specific Gravity: 1.115 at 20°C (liquid) 9.8 Liquid ... 9.15 Heat of Solution: (est.) 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. temperature of the sample if the final temperature is 32.5 oC (c of EG is 2.42 J/(g K)_? Mono Ethylene Glycol, commonly referred to as Ethylene Glycol Antifreeze but also referred to as Ethane-1,2-diol, MEG, EG and Industrial Glycol. The specific heat capacity of an ethylene glycol based water solution is less than the specific heat of clean water. Ethylene Glycol: The molar mass of Ethylene glycol is about 62.07 g/mol. Mono Ethylene Glycol is produced by the oxidation of ethylene at a high temperature in the presence of a silver oxide catalyst. 0000000956 00000 n Ethylene glycol is about 10% heavier than water (depending on operating temperature). Peak blood ethylene-carbonate and ethylene-glycol concentrations in rats dosed with ethylene-carbonate were 0.028 and 2.3 umol/g, respectively. investigated the performance of ethylene glycol/copper nanofluids and reported an enhanced heat transfer rate. Please note: The list is limited to 20 most important contributors or, if less, a number sufficient to account for 90% of the provenance. Example - the specific heat of an ethylene glycol water solution 50% / 50% is 0.815 at 80 o F (26.7 o C). This is for a physics assignment so i must be able to say that it came from a reliable source. the fluid with better heat transfer capabilities. 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. (Monoethylene Glycol / MEG) Monoethylene glycol (MEG) in its pure form, it is an odorless, colorless, syrupy liquid with a sweet taste. 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 … Ethylene Glycol 3 9/12/13 Ethylene Glycol: HOCH 2 CH 2 OH CAS Registry Number: 107-21-1 Synonyms: 1, 2-Ethanediol Glycol EG Monoethylene glycol Ethylene glycol is a colorless, practically odorless, low- Triethylene glycol, HO(C 2 H 4 O) 3 H, is a colourless, odourless, non-volatile, and hygroscopic liquid. Data All Publications/Website. The specific heat varies with both concentration and temperature. "Based on a rather extensive database, it induces skeletal variations and malformations in rats and mice by all routes of exposure. Kulacki, U. Kortshagen, S. Garrick, V. Srinivasan, K. Ghosh, R. Mittal. Specific gravity at the same conditions is 1.077. Please explain how to do this, id like the answer, but i need to … [23], Ethylene glycol is moderately toxic, with an oral LDLo = 786 mg/kg for humans. CS1 maint: BOT: original-url status unknown (, National Institute for Occupational Safety and Health, Ullmann's Encyclopedia of Industrial Chemistry, "Coal to MEG, Changing the Rules of the Game", "China's coal-based chemicals are a trade-off", "Polyethylene bio-degradation by caterpillars of the wax moth Galleria mellonella", "Stubborn plastic may have finally met its match: the hungry wax worm", "Synthèse du glycol avec l'oxyde d'éthylène et l'eau", "Synthesis of pentacoordinate silicon complexes from SiO, "Antifreeze and Engine Coolant Being Bittered Nationwide", "Statement of the Science Report for Ethylene Glycol", "Interstellar Antifreeze: Ethylene Glycol", ATSDR - Case Studies in Environmental Medicine: Ethylene Glycol and Propylene Glycol Toxicity, CDC - NIOSH Pocket Guide to Chemical Hazards, Antifreeze ratio for Ethylene Glycol and Propylene Glycol, https://en.wikipedia.org/w/index.php?title=Ethylene_glycol&oldid=995561221, CS1 maint: BOT: original-url status unknown, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License, This page was last edited on 21 December 2020, at 18:47. the Altmetric Attention Score and how the score is calculated. 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. Czysty glikol etylenowy ma pojemność cieplna właściwa o jednej drugiej że z wody. 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 Also, it depends on external conditions: pressure and temperature. Some of our calculators and applications let you save application data to your local computer. 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. Leong et al. Freezing points, burst points, boiling points, and specific gravities of Dynalene ethylene glycol solutions. (Monoethylene Glycol / MEG) Monoethylene glycol (MEG) in its pure form, it is an odorless, colorless, syrupy liquid with a sweet taste. Ethylene Glycol was first formulated in the 1850’s and is now commercially produced through a chemical reaction between Ethylene Oxide and a catalyst. 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. 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? OR SEARCH CITATIONS Ethylene Glycol: The molar mass of Ethylene glycol is about 62.07 g/mol. Uses

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