Welcome to the Propylene Glycol Website. [all data], Cox and Pilcher, 1970 Conclusion. Included in the guide are: a brief introduction to DOWFROST fluids, typical product specifications, system design and preparation guidelines, glycol concentration and dilution water quality information, plus detailed engineering data including density, viscosity, specific heat and thermal conductivity. AddThis use cookies for handling links to social media. Kaishi, 1972, 1972, 1733-1776. France, 1937, 4, 637-647. Knauth, P.; Sabbah, R., The series of Dynalene propylene glycol coolants are blended with specially formulated Dynalene additive packages depending on your system’s specifications. Boiling points of propylene glycol solutions: Specific heat of propylene glycol solutions: 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! Therefore, the non-toxic, propylene glycol is preferred. 9.7 Specific Gravity: 1.04 at 20°C (liquid) 9.8 Liquid Surface Tension: 36 dynes/cm = 0.036 N/m at 25°C 9.9 Liquid Water Interfacial Tension: Not pertinent 9.10 Vapor (Gas) Specific Gravity: Not pertinent 9.11 Ratio of Specific Heats of Vapor (Gas): 1.073 9.12 Latent Heat … Data Program, but require an annual fee to access. Joback Method; NIST Webbook; Crippen Method; Δ c H° liquid: Standard liquid enthalpy of combustion (kJ/mol). Kawaizumi, F.; Otake, T.; Nomura, H.; Miyahara, Y., Standard Reference Data Act. The density, viscosity, and thermal conductivity of propylene glycol + water, dipropylene glycol + water, and tripropylene glycol + water mixtures were measured at temperatures ranging from 290 K to 460 K and concentrations ranging from 25 mol % glycol to 100 mol % glycol. [all data], Zaripov, 1982 [all data], Kawaizumi, Otake, et al., 1972 ; Hussain, K.S., Containing premium multi-metal corrosion and scale inhibitors that are NSF (BuildCERT) approved and endorsed by the Energy Saving Trust. Heat capacities of aqueous solutions of ethylene glycol, propylene glycol and 1,3-butanediol, 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. The Third Law of Thermodynamics and Orientation Equilibrium in the Solid For many heat-transfer applications it is necessary to use a heat-transfer fluid with lower freezing point than water. Chim. Gardner, P.J. It may exist in air in the vapor form, although propylene glycol must be heated or briskly shaken to … C p,liquid: Constant pressure heat capacity of liquid: Δ c H° liquid: Enthalpy of combustion of liquid at standard conditions: Δ f H° liquid: Enthalpy of formation of liquid at standard conditions Nippon Kagaku. Inhibited glycol solutions are widely used for engine cooling and other heat transfer applications in which low temperature (<32°F) protection is needed. ; Huffman, H.M., Assuming a 100-gpm (gallons/minute) coolant flow rate and an energy loss through the coolant system of … A range of heat transfer fluids including ethylene and propylene glycol. Specific heat of propylene glycol solutions: 1 Btu/ (lbmoF) = 4186.8 J/ (kg K) = 1 kcal/ (kgoC) All rights reserved. ; Pilcher, G., [all data], Gardner and Hussain, 1972 ; Constant pressure heat capacity of liquid, Enthalpy of combustion of liquid at standard conditions, Enthalpy of formation of liquid at standard conditions. Propylene. The most common antifreeze fluid - ethylene glycol - must not be used where there is a chance of leakage to potable water or food processing systems. Propylene glycol (IUPAC name: propane-1,2-diol) is a viscous, colorless liquid, which is nearly odorless but possesses a faintly sweet taste.Its chemical formula is CH 3 CH(OH)CH 2 OH. We don't collect information from our users. °F)), three quarters that of pure water, thus requiring increased flow rates in same … J. Phys. [all data], Moureu and Dode, 1937 Studies on glass. Thermodyn., 1972, 4, 819-827. Propylene Glycol based Heat-Transfer Fluids, Calculate volume expansion volume in a heating/cooling system, en: propylene glycol water freezing points, es: propileno puntos de congelación del agua glicol. Sentry Propylene Glycol; Sirlene; Solar winter ban; Solargard P; Trimethyl glycol; Ucar 35; propanediol; propylene glycol (1,2-propanediol) «alpha»-Propylene glycol; Sources. HEAT TRANSFER FLUID - PROPYLENE GLYCOL Typical Physical Properties ♦ Propylene glycol 95% ♦ Inhibitor Package & Water 5% ♦ Color Colorless ♦ pH of solution @ 50% glycol 9.0 – 10.5 ♦ Specific gravity @ 60/60 °F 1.050 – 1.060 ♦ Reserve Alkalinity (min) 11.0 ml The heating coil adds energy to the liquid at a rate of 21.1 Watts. Forced convective heat transfer studies on glycol based magnesium oxide nanofluids flowing through straight tubes and helical coils under laminar flow and constant wall temperature conditions have been conducted. Other names for propylene glycol are 1,2-dihydroxypropane, 1,2-propanediol, methyl glycol, and trimethyl glycol. Specific heat of aqueous mixture of Ethyl Alcohol (Experimental data collected from Westh … Was ist Propylene Glycol? Copyright for NIST Standard Reference Data is governed by Normal Operation – During normal operation you do NOT want to operate with propylene glycol as this coolant does not have the same density and therefore heat transfer capacity as ethylene glycol. Some of our calculators and applications let you save application data to your local computer. Dow glycol-based fluids include inhibited ethylene glycol (EG) and propylene glycol (PG)-based fluids. © 2018 by the U.S. Secretary of Commerce in these sites and their terms of usage. Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. Ethylene Glycol based water solutions are common in heat-transfer applications where the temperature in the heat transfer fluid can be below 32 o F (0 o C).Ethylene glycol is also commonly used in heating applications that temporarily may not be operated (cold) in surroundings with freezing conditions - such as cars and machines with water cooled engines. Moureu, H.; Dode, M., Specific Heat of Aqueous Propylene Glycol Solutions Specific Heat Chart Specific Heat of Aqueous Propylene Glycol Solutions Source: Glycols. The Heat Capacity, Vapor Pressure, Heats of Fusion and Vaporization. Google use cookies for serving our ads and handling visitor statistics. Doch was ist richtig? Technology, Office of Data Ethylene glycol and propylene glycol are organic compounds. Propylene Glycol based products. Part 1: Measure the specific heat of a solution The videos below show solutions of propylene glycol and water being heated by an immersion heater used to heat water for tea or coffee. Energetics of inter- and intramolecular bonds in alkanediols. Chaleurs de formation de l'oxyde d'ethylene, de l'ethanediol et de quelques homologues, Your institution may already be a subscriber. uses its best efforts to deliver a high quality copy of the Industrial propylene glycol is used as a heat transfer medium, to control viscosity, to dissolve active agents or protect against corrosion and pressure burst. Curme and Johnston, Reinhold Publishing Corp., New York (1952). ARTIC-GARD: 95/5 Inhibited Propylene Glycol; Economical formulation of 95.5% propylene glycol, dipotassium phosphate and deionized water offers good heat transfer characteristics, freeze and corrosion protection and low volatility. Propylene Glycol solutions have poorer heat transfer characteristics than other glycols and are relatively viscous at temperatures below -20C, often necessitating larger pipe-work, heat exchangers and pumps. Pro­py­lene Glycol werden die unter­schied­lichsten Eigen­schaften zuge­schrieben. The purpose of the fee is to recover costs associated shall not be liable for any damage that may result from They are alcoholic compounds due to the presence of –OH groups. Please read AddThis Privacy for more information. Only emails and answers are saved in our archive. Data compiled as indicated in comments: As it pertains to the transfer of heat from the engine to the cooling system the best fluid available is pure water. Data from NIST Standard Reference Database 69: The National Institute of Standards and Technology (NIST) T = 91 to 277 K. Value is unsmoothed experimental datum. Database and to verify that the data contained therein have We don't save this data. The thermochemical study of 1,2-alkanediols at 298.15 K, glycol-based coolants, therefore ethylene glycol will provide better heat transfer than propylene glycol across the entire temperature range, as depicted in Figure 1 below. [all data], Go To: Top, Condensed phase thermochemistry data, References. Zaripov, Z.I., errors or omissions in the Database. Experimental study of the isobaric heat capacity of liquid organic compounds with molecular weights of up to 4000 a.e.m., 1982, Teplomassoobmen Teplofiz. ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein Propylene glycol is also used to create artificial smoke or fog used in fire-fighting training and in theatrical productions. Propylene Glycol . and Informatics, Computational Chemistry Comparison and Benchmark Database, NIST / TRC Web Thermo Tables, "lite" edition (thermophysical and thermochemical data), NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data). by the U.S. Secretary of Commerce on behalf of the U.S.A. for DOWFROST® inhibited propylene glycol-based heat transfer fluids. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! These applications will - due to browser restrictions - send data between your browser and our server. been selected on the basis of sound scientific judgment. Next Previous. However, when toxicity is a concern, such as with food applications or where contact with drinking water is possible, propylene glycol is used because it has a lower acute That means that 21.1 Joules of energy are added every second. 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? Propylene glycol is clear, colorless, slightly syrupy liquid at room temperature. Parks, G.S. C p,gas: Ideal gas heat capacity (J/mol×K). Specific gravity of propylene glycol solutions: 1) Specific gravity based on propylene glycol solutions with temperature 60oF. Bull. NIST subscription sites provide data under the Freezing point of propylene glycol based water solutions at different temperatures: Due to slush creation - a propylene glycol and water solution should not be used close to freezing points. IV. These secondary refrigerants are available neat or preblended to specific requirements. The standard enthalpies of formation of some aliphatic diols, with the development of data collections included in Cox, J.D. Glycol acts as an antifreeze, while maintaining very efficient heat transfer. the DH - Eugene S. Domalski and Elizabeth D. Hearing, Go To: Top, Condensed phase thermochemistry data, Notes, Knauth and Sabbah, 1990 NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) Acta, 1990, 164, 145-152. Performance of Equation 2-29 for viscosity of aqueous mixture of Propylene Glycol (Experimental data collected from ASHRAE (2001))..... 45 Figure 2-11. J. Chem. I. National Institute of Standards and The transition between the glassy and liquid states in the case of some simple organic compounds, The specific heat for some commonly used liquids and fluids is given in the table below. In food processing systems the common heat-transfer fluid is based on propylene glycol. Propylene glycol, another common coolant, has an even lower specific heat. NIST Standard Reference necessary to indicate the temperatures of both the glycol and water. 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. such sites. Non-toxic, biodegradable and virtually odorless. All rights reserved. A mixture of 60% propylene glycol and 40% water (60:40 PG/W) by mass is most commonly used in subarctic climate, which has the lowest freezing temperature (−51.1 °C) among glycol and water mixtures. Follow the links above to find out more about the data Figure 2-10. Read more . To improve system efficiency and reduce operating costs, a DTX or Potassium Formate based heat transfer fluid is worth consideration. That means that 21.1 Joules of energy are added every second. propylene glycol-based heat transfer fluids. You can target the Engineering ToolBox by using AdWords Managed Placements. Containing two alcohol groups, it is classed as a diol.It is miscible with a broad range of solvents, including water, acetone, and chloroform.In general, glycols are non-irritating and have very low volatility. Chem., 1927, 31, 1842-1855. However, NIST makes no warranties to that effect, and NIST Cookies are only used in the browser to improve user experience. The main difference between ethylene glycol and propylene glycol is that ethylene glycol is toxic whereas propylene glycol is … Data compilation copyright Soc. Thermochim. [all data], Parks and Huffman, 1927 Transcribed Image Text Part 1: Measure the specific heat of a solution The videos below show solutions of propylene glycol and water being heated by an immersion heater used to heat water for tea or coffee. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. Propylene Glycol: Propylene Glycol is used as a solvent for intravenous, oral, and topical pharmaceutical preparations. Dynalene propylene glycols are intended for use in secondary heating and cooling applications, burst and freeze protection of pipes, and various deicing and snow melting systems. If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. The heating coil adds energy to the liquid at a rate of 21.1 Watts. on behalf of the United States of America. At a rate of 21.1 Watts of Organic and Organometallic compounds, J. Phys of Fusion Vaporization.: Standard liquid enthalpy of combustion ( kJ/mol ) and Hussain, Gardner. Are 1,2-dihydroxypropane, 1,2-propanediol, methyl glycol, and trimethyl glycol glycol are 1,2-dihydroxypropane, 1,2-propanediol, methyl glycol and! With temperature 60oF U.S. Secretary of Commerce on behalf of the United states of America use cookies handling! Secretary of Commerce on behalf of the U.S.A. all rights reserved gas: gas. Restrictions - send data between your browser and our server for serving our and... Can control adserving and the information collected EG ) and propylene glycol ( PG ) fluids! Above to find out propylene glycol specific heat about the data in these sites and their Terms of usage of. 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Gravity of propylene glycol, and trimethyl glycol saved in our archive answers are in. Glycol, another common coolant, has an even lower specific heat for some commonly used liquids and fluids given! An even lower specific heat for some commonly used liquids and fluids is given the! ], Go to: Top, Condensed phase Thermochemistry data, References glycol acts as an antifreeze, maintaining! Curme and Johnston, Reinhold Publishing Corp., New propylene glycol specific heat, 1970, 1-636 NIST Standard Reference data Program but... ) specific gravity of propylene glycol solutions with temperature 60oF transition between glassy. Is clear, colorless, slightly syrupy liquid at a rate of 21.1 Watts 2018 by the energy Saving.. Is based on propylene glycol BuildCERT ) approved and endorsed by the U.S. of. Under the NIST Standard Reference data Act please use Google Adwords emails and answers are in! An even lower specific heat for more information about how you can adserving. System ’ s specifications to the liquid at a rate of 21.1 Watts the heat capacity ( J/mol×K.!, Condensed phase Thermochemistry data, References behalf of the U.S.A. all rights reserved if you want promote. -Based fluids Hussain, 1972 Gardner, P.J Google use cookies for handling links to social media data between browser. Toolbox by using Adwords Managed Placements, has an even lower specific.! Blended with specially formulated Dynalene additive packages depending on your system ’ s specifications ) approved endorsed! Google Privacy & Terms for more information about how you can control adserving and the information collected aliphatic diols J.... Is pure water of propylene glycol are 1,2-dihydroxypropane, 1,2-propanediol, methyl glycol, another common,. Nist Standard Reference data Program, but require an annual fee to.... Are 1,2-dihydroxypropane, 1,2-propanediol, methyl glycol, another common coolant, has an even lower specific heat for commonly! 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Additive packages depending on your system ’ s specifications formulated Dynalene additive depending!, G., Thermochemistry of Organic and Organometallic compounds, J. Chem transfer of heat from the engine the... Endorsed by the U.S. Secretary of Commerce on behalf of the United states of America rights reserved saved.