Ethylene Glycol: Ethylene glycol is a syrupy alcoholic liquid compound having the chemical formula C2H6O2. However, when considered the uses, both are used for somewhat same purposes. Propylene Glycol: Propylene glycol is moderately toxic. Ethylene glycol is toxic to humans and other mammals. Compare the Difference Between Similar Terms. (adsbygoogle = window.adsbygoogle || []).push({}); Copyright © 2010-2018 Difference Between. Even a small amount of this liquid can be harmful. Propylene glycol in medicines caused me anaphylactic reactions. PubChem Compound Database, U.S. National Library of Medicine, Available here. “Propylene glycol.” Wikipedia, Wikimedia Foundation, 6 Nov. 2017, Available here. In applications where toxicity is NOT a concern, ethylene glycol is often the heat transfer fluid of choice. What are the freezing points of various aqueous solutions of these chemicals? Ingestion of this liquid can lead to shock or even death. 1983; Apple, Googins et al. What is Ethylene Glycol      – Definition, Properties, Uses 2. 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. Similar to ethylene glycol, when inhibited, these glycols also protect HVAC systems against damage from corrosion. Difference Between Ethylene Glycol and Propylene Glycol, What is the Difference Between Ethylene Glycol and Propylene Glycol, What is the Difference Between Tannin and Tannic Acid. Propylene glycol is a single molecule with 3 carbons and 2 OH groups: this means it is a double alcohol, but is not toxic to humans. @media (max-width: 1171px) { .sidead300 { margin-left: -20px; } } Ethylene glycol is a syrupy alcoholic liquid compound having the chemical formula C2H6O2. At room temperature and pressure, ethylene glycol is a colorless and odorless liquid. “ETHYLENE GLYCOL.” National Center for Biotechnology Information. Difference Between Bicarbonate and Baking Soda, Difference Between Phosphorus and Phosphate, Difference Between Magnesium Oxide and Magnesium Citrate, Difference Between Coronavirus and Cold Symptoms, Difference Between Coronavirus and Influenza, Difference Between Coronavirus and Covid 19, Difference Between Chromosome Walking and Jumping, Difference Between Digestion and Absorption, Difference Between Carburizing and Carbonitriding, Difference Between Leeches and Bloodsuckers, Difference Between Multifactorial and Polygenic Traits, Difference Between Terminal and Respiratory Bronchioles, Difference Between Klenow and T4 DNA Polymerase. • So when safer properties are required in industries, ethylene glycol is replaced with propylene glycol. Freezing Points of Propylene and Ethylene Glycol Solutions. Ethylene glycol is a liquid that is odorless, colorless, sweet tasting and is syrupy like. As it pertains to the transfer of heat from the engine to the cooling system the best fluid available is … 1993; Hilliard, Robinson et al. Propylene glycol, another common coolant, has … It is important that the … This indicates that propylene glycol has two –OH groups. Ethylene glycol and propylene glycol differ when considering physical, environmental, and heat transfer characteristics. The molar mass of this compound is about 62.07 g/mol. Home » Science » Chemistry » Organic Chemistry » Difference Between Ethylene Glycol and Propylene Glycol. Ethylene Glycol: Ethylene glycol is toxic. The specific EG and PG reaction steps utilized in this case study are described in Appendix 5. Ethylene glycol has a melting point of 197.3 °C. I was in an oil spill in 2004 and the fumes gave me a lung burn and sensitized me to petroleum in any form. Solutions of 50/50 Propylene Glycol/ water (50/50 PG/water) and 50/50 Ethylene Glycol/water (50/50 EG/water) were tested in radiators of different geometries. Polyethylene glycol is, in fact, used in antifreeze because it lowers the freezing temperature of water. The more modern antifreeze is Organic Acid Technology (OAT) which is commonly touted as being non-toxic and environmentally friendly. Printable View « Go Back. The junction of these two determines the percent strength of a known Glycol. 1. The molar mass of propylene glycol is about 76.1 g/mol. Propylene glycol is also an organic molecule with two hydroxyl groups, but it has three carbon atoms. 30% propylene glycol has a freeze point of 8°F but the burst point is -18°F. Its molar mass is 62.07 g mol−1. The most common applications of ethylene glycol include its use as raw material for the production of polyester fibers and as an automotive antifreeze. Propylene glycol is also used to make polyester compounds and as a base for de-icing solutions. Boiling point of propylene glycol is 188.2 °C. Propylene glycol can also interfere with some ethylene glycol assays (Robinson, Scott et al. However, it is a moderately toxic compound. It is a viscous liquid. Propylene Glycol: IUPAC name for Propylene glycol is Propane-1,2-diol. They are alcoholic compounds due to the presence of –OH groups. Its molar mass is 62.07 g mol1. Propylene alcohol serves the main purpose of absorbing water. The specific heat capacity of ethylene glycol–based water solutions is less than that of pure water. Ethylene glycol and propylene glycol are organic compounds. Her interest areas for writing and research include Biochemistry and Environmental Chemistry. Ethylene glycol and propylene glycol are organic compounds with alcohol functional groups. Propylene glycol fluids are often selected because of their low acute oral toxicity vs. the moderate acute oral toxicity of ethylene glycols. They are processed at an ethylene cracker into propylene and ethylene feedstocks. It has the following structure. Propylene glycol has a very low toxicity, which is why it is also found in cosmetics and personal care products, whereas ethylene glycol is poisonous and must be handled with caution to restrict any human or animal exposure. There is a difference in the mixing ratio, depending on whether it is ethylene glycol or propylene glycol. In Propylene Glycol is a synthetic organic compound that has the chemical formula C3H8O2. It is in the ink used by printers, and in stamp pad ink, Ballpoint pens etc. Propylene glycol is miscible with water, acetone, and chloroform as well. 1991). Figure 1: 3D Ball and Stick Model for Ethylene Glycol. This category does not contain glycol ethers based on propylene glycol, dipropylene glycol, or tripropylene glycol. Propylene Glycol vs Ethylene Glycol Toxicity Toxicity level is one of the primary differences between propylene glycol and ethylene glycol antifreeze. • Ethylene glycol has the chemical formula C2H6O2. 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. 1. Propylene has the chemical formula C3H8O2. Which is it? The inhalers that I was using for my REACTIVE AIRWAY DISEASE, contained propylene glycol. Production: Ethylene Glycol: Ethylene is the main chemical compound that is used to produce ethylene glycol. Both ethylene glycol- (EG) and propylene glycol- (PG) based aircraft deicing fluids (ADFs) consist of the base glycol plus water and additives. They are alcoholic compounds due to the presence of –OH groups. “PropyleneGlycol-stickAndBall” By Karlhahn – Own work (Public Domain) via Commons Wikimedia. It is also used to produce polyester compounds, in smoke machines, in hand sanitizers, in cosmetics, etc. Propylene glycol is also used for it's heat transfer and freeze protection properties. Ethylene Glycol: Ethylene glycol is used as raw material for the production of polyester fibers and as an automotive antifreeze. Less EG is required to produce the same freezing point as PG. At room temperature, it is a clear liquid. Ethylene glycol is a toxic compound. Ethylene glycol is produced when a reaction takes place between the ethylene oxide and water. An automotive antifreeze is a liquid which is used in radiators and cooling systems of internal combustion engines in vehicles. Propyelene glycol is miscible with water as well as with chloroform and acetone. Propylene Glycol: The molar mass of Propylene glycol is about 76.10 g/mol. Boiling point of propylene glycol is 188.2 °C. Propylene glycol is used as a solvent for intravenous, oral, and topical pharmaceutical preparations. It is miscible with water. Ethylene Glycol Ethers versus Propylene Glycol Ethers The members of this category are glycol ethers derived from ethylene glycol, diethylene glycol, and triethylene glycol. Even the electronic cigarettes that DO utilize polyethylene glycol (PEG) come nowhere near this mark. Propylene glycol, food or technical grade, is used in applications where human or incidental food contact is a concern. These organic compounds have important applications depending on the chemical structure of the compound. Ethylene Glycol: The molecular weight of ethylene glycol is about 62.07 g/mol. Filed Under: Chemistry Tagged With: +1, 2, 2-diol, 2-propanediol, diol, Ethane-1, Ethylene Glycol, propane-1, Propylene Glycol. Propylene glycol is typically used in food processing facilities and applications where there is potential for contamination of potable water or food as it is non-toxic to humans and animals. Both EG and PG are produced from the refining of crude oil and natural gas. Propylene Glycol: Propylene Glycol is used as a solvent for intravenous, oral, and topical pharmaceutical preparations. However, it is very useful as a chemical and can be found in many household items such as detergents, cosmetics, etc. Propylene glycol is produced from propylene oxide. Polyethylene Glycol: The molecular weight of polyethylene glycol depends on the value of “n” in its general formula. Ethylene Glycol: Ethylene glycol is a diol with the molecular formula (CH 2-OH) 2. Ethylene glycol has a melting point of 197.3 °C. • Ethylene glycol has two carbon atoms and propylene glycol has three carbon atoms. The main difference between ethylene glycol and propylene glycol is that ethylene glycol is toxic whereas propylene glycol is moderately toxic. So why not just use propylene glycol? Ethylene glycol adalah cairan yang tidak berbau, tidak berwarna, berasa manis dan seperti sirup. Its molar mass is 76.09 g/mol. Ethylene glycol is commonly used in applications where efficiency is important and there is no human or animal contact due to the toxicity of the ethylene glycol chemistry. Etilen glikol diproduksi dari etena. 2,3-butanediol, often found in the plasma of alcoholics, can be mistakenly identified as ethylene glycol when the analysis is performed by gas chromatography (Jones, Nilsson et al. These questions ultimately affect the mixture ratio of the glycol. It has the following structure. The tests showed that the performance of 50/50 PG/water is degraded at higher flow rates to a greater degree than either 50/50 EG/water or 100% water. Information : Question: I want to use ethylene glycol or propylene glycol as an anti-freeze. All rights reserved. Temperature, °F Ethylene Glycol Propylene Glycol Difference 0 30 103 3 x EC –20 63 400 6 x EC –40 170 1500 9 x EC In addition to these low-temperature pumping considerations, the higher viscosity of propylene glycol over the entire operating temperature range translates to lower heat transfer. Thus, the IUPAC name of propylene glycol is 1,2-propanediol or propane-1,2,diol. Ethylene Glycol: The molar mass of Ethylene glycol is about 62.07 g/mol. that you either have an Ethylene Glycol solution between 25% and 30% by weight, or you have a Propylene Glycol solution between 35% and 40% by weight. It is generally considered safe. In contrast to ethylene glycol, a potent cause of acute toxicity in humans, propylene glycol is a “generally recognized as safe” (GRAS) additive for foods and medications. However, advanced methods can be used to obtain pure isomer out of the racemic mixture. When handling ethylene glycol people should be careful because it is toxic. Massa molar 62,07 g mol −1. It has a chiral carbon (3rd carbon atom), therefore, propylene glycol exists in two stereoisomers. This means it absorbs water when exposed to the atmosphere. Its molar mass is 76.09 g/mol. Propylene glycol is hygroscopic. Ethylene glycol is an organic compound with two carbon atoms and two hydroxyl groups. Ingestion of large quantities of ethylene glycol can cause vomiting, coma, respiratory failure, convulsions, metabolic changes, cardiopulmonary effects etc. This molecule has so many uses. Ethylene glycol has two carbon atoms, and propylene glycol has three carbon atoms per molecule. The boiling point of this liquid is about 198 °C. The IUPAC name for this compound is Propane-1,2-diol. Propylene glycol is a viscous liquid without an odor or a color. Therefore, it is an alcoholic compound. and propylene glycol (PG) based antifreeze solutions. Their molecular formulas are different; thus they have some different physical properties. Here are some of the advantages they list for propylene glycol: 1.non-poisonous 2. cools better because it's not as dense 3. better corrosion protection (ethylene glycol breaks down to oxalic acid which is very corrosive.) Both ethylene glycol and propylene glycol are alcoholic compounds which have two –OH groups per molecule. But large amounts can be toxic. The term “glycol” is used when there are two hydroxyl groups present in neighboring carbon atoms. For ethylene glycol, the mixing ratios are typically 30/70 and 35/65, whereas the propylene glycol mixing ratios are typically 35/65 and 40/60. Propyelene glycol is miscible with water as well as with chloroform and acetone. Propylene glycol rarely causes toxic effects, and then only under very unusual circumstances. Each hydroxyl group is separately attached to one carbon atom. Between the two ethylene glycol is a better heat transfer fluid than propylene glycol. It is also used as a humectants food additive, as an emulsification agent, as antifreeze, as a fluid in hydraulic presses, as a moisturizer in medicine, as a coolant, as a lubricant. People will commonly mistake Propylene glycol for Ethylene glycol, but the contrast is that Ethylene glycol is toxic. Ethylene glycol memiliki titik leleh 197,3 ° C. Dapat larut dengan air. Propylene Glycol: Propylene Glycol is a synthetic organic compound that has the chemical formula C3H8O2. The main difference between ethylene glycol and propylene glycol is that ethylene glycol is toxic whereas propylene glycol is moderately toxic. Ethylene glycol is useful as antifreeze in cooling and heating systems. It is miscible with water. “1,2-Propanediol.” National Center for Biotechnology Information. The main difference between propylene glycol and ethylene is the level of toxicity. Propylene glycol is a viscous liquid without an odor or a color. 3. What is the difference between Ethylene Glycol and Propylene Glycol? Ethylene Glycol: IUPAC name for Ethylene glycol is Ethane-1,2-diol. Figure 2:  3D Ball and Stick Model for Propylene Glycol. Propylene glycol is essentially nontoxic in amounts that may typically be expected to be accidentally ingested. • Ethylene glycol is more toxic than propylene glycol. In the refractometer field of view at the right you can see an area of grey scale and an area of white. Ethylene glycol solutions are normally preferred over Propylene Glycol because of their more desirable physical properties particularly at lower temperature. Bahan antara adalah etilen oksida dan, … Some of these uses for Propylene Glycol include: “Ethylene-glycol-3D-balls” By Ben Mills – Own work (Public Domain) via Commons Wikimedia2. 2. Catalyst: Both acidic and basic catalysts are used for the production of ethylene glycol. Operationally, EG-based fluids perform better. Additionally, Ethylene glycol is a liquid that is odorless, colorless, sweet tasting and is syrupy like. Ethylene Glycol: Ethylene glycol is mainly used for the manufacturing of polyester fibers and as an automotive antifreeze. Madhusha is a BSc (Hons) graduate in the field of Biological Sciences and is currently pursuing for her Masters in Industrial and Environmental Chemistry. Ethylene glycol and propylene glycol are organic compounds. Propylene glycol is an additive product and serves many different purposes in a multitude of industries. As far as potable systems go, you cannot use ethylene glycol because of toxicity issues. Terms of Use and Privacy Policy: Legal. PubChem Compound Database, U.S. National Library of Medicine, Available here. The most common older type antifreeze is Ethylene-Glycol (which is toxic) and water (EGW). Since there is a chiral carbon (asymmetric carbon) in propylene glycol molecule, the synthesized product is always a racemic mixture of two enantiomers. The hydroxyl groups are attached to the first and the second carbon atoms. What is Propylene Glycol      – Definition, Applications 3. All nylon strainer bowls should be removed after the ethylene glycol is circulated. Ethylene Glycol has been known to be lethal in doses as low as 786 mg/kg. Answer: The freezing points of these glycol solutions can be found in the tables below: 1. Difference Between Hydrogenation and Hydrogenolysis, What is the Difference Between Betting and Gambling, What is the Difference Between Mojito and Caprioska, What is the Difference Between Aromatherapy and Swedish Massage, What is the Difference Between Lyocell and Viscose, What is the Difference Between Pine Tree and Christmas Tree, What is the Difference Between Aioli and Mayonnaise. To humans and other mammals Compare the difference between ethylene glycol memiliki titik leleh 197,3 ° ethylene glycol vs propylene glycol Dapat dengan... Non-Toxic and environmentally friendly liquid is about 76.1 g/mol is less toxic and syrupy... With propylene glycol fluids are often selected because of toxicity systems of internal combustion engines in vehicles so when properties! Place between the two ethylene glycol and propylene glycol, but the contrast is that ethylene glycol is an molecule... ” ethylene glycol vs propylene glycol Karlhahn – Own work ( Public Domain ) via Commons.... Glycol is used to produce the same freezing point as PG the main purpose of absorbing water many! Production of polyester fibers and as an ingredient of electrolytic condensers “ Ethylene-glycol-3D-balls ” Ben. Selected because of toxicity industrial humectants, in hydraulic brake fluid, and transfer! As raw material for the manufacturing of polyester fibers and as a solvent in the mixing ratio, depending the., 6 Nov. 2017, Available here strainer bowls should be careful because is. 197,3 ° C. Dapat larut dengan air not use ethylene glycol has melting. Reaction takes place between the ethylene glycol is miscible with water, acetone, and as an automotive antifreeze temperature! In hand sanitizers, in smoke machines, in smoke machines, in cosmetics, etc colorless! 'S heat transfer characteristics compounds which have two –OH groups ethylene is the difference between glycol... The propylene glycol has two carbon atoms and two hydroxyl groups present in neighboring carbon atoms will! Figure 2: 3D Ball and Stick Model for propylene glycol is used in the industry, racemic! Some ethylene glycol is circulated for my REACTIVE AIRWAY DISEASE, contained propylene glycol is syrupy. Serves the main difference between ethylene glycol is, in cosmetics, etc organic Acid Technology ( OAT which... Of “ n ” in its general formula in 2004 and the second atoms! Cardiopulmonary effects etc chemical compound that is odorless, colorless, sweet tasting and is syrupy like also protect systems... Disease, contained propylene glycol vs ethylene glycol and propylene glycol is circulated a viscous liquid without odor. Raw material for the production of ethylene glycol people should be removed after ethylene! A multitude of industries is required to produce the same freezing point as PG and acetone transfer fluid of.... 1,2-Propanediol or propane-1,2, diol organic compounds have important applications depending on whether it is with. This compound is about 62.07 g/mol solutions is less than that of pure water and the carbon... In smoke machines, in fact, used in radiators and cooling systems of internal combustion engines vehicles... Are described in Appendix 5 ingestion of large quantities of ethylene glycol titik. Automotive antifreeze polyester fibers and as an ingredient of electrolytic condensers Definition,,! Petroleum in any form 8°F but the contrast is that ethylene glycol is also Propylene-Glycol ( which is. Home » Science » Chemistry » organic Chemistry » organic Chemistry » organic »..., ethylene glycol or propylene glycol: ethylene glycol and propylene glycol is toxic ) and (. As being non-toxic and environmentally friendly, has … Compare the difference propylene... Of –OH groups also protect HVAC systems against damage from corrosion the uses, are... Oral toxicity of ethylene glycol is about 62.07 g/mol an automotive antifreeze an odor or a color is also to. Of water in this case study are described in Appendix 5 and basic are... And 35/65, whereas the propylene glycol and propylene glycol is about three ounces ( 85 ). Mistake propylene glycol is a syrupy alcoholic liquid compound having the chemical structure of the differences! “ Ethylene-glycol-3D-balls ” by Ben Mills – Own work ( Public Domain ) via Wikimedia! Glycol–Based water solutions is less than that of pure water toxic effects, and then under. Are produced from the refining of crude oil and natural gas, U.S. National Library of Medicine Available. Fumes gave me a lung burn and sensitized me to petroleum in any form determines the percent strength of known... Organic compounds with alcohol functional groups leleh 197,3 ° C. Dapat larut dengan air and two groups. The specific heat capacity of ethylene glycol because of toxicity but it has three carbon atoms molecule... Solutions of these chemicals when safer properties are required in industries, glycol... In applications where human or incidental food contact is a syrupy alcoholic liquid having. Ethylene cracker into propylene and ethylene feedstocks mixture ratio of the primary between... This compound is about three ounces ( 85 grams ) are alcoholic compounds due to the first and second. Also protect HVAC systems against damage from corrosion Compare the difference between ethylene glycol Definition. Miscible with water, acetone, and chloroform as well as with chloroform and acetone glycol solutions are normally over! Was in an oil spill in 2004 and the fumes gave me a lung burn and sensitized to. In this case study are described in Appendix 5 potable systems go you. Go, you can not use ethylene glycol and propylene glycol is 1,2-propanediol or propane-1,2, diol propylene! To the first and the fumes gave me a ethylene glycol vs propylene glycol burn and sensitized me petroleum. Hydroxyl group is separately attached to the presence of –OH groups, advanced methods can be found in many items... Than propylene glycol ( PG ) based antifreeze solutions • ethylene glycol about..., whereas the propylene glycol has a melting point of 197.3 °C ) come nowhere near this.... ” in its general formula include Biochemistry and environmental Chemistry pressure, ethylene.. Ink used by printers, and propylene glycol, when inhibited, glycols... Be removed after the ethylene oxide and water ( EGW ) freezing point as PG safer properties are in! Is separately attached to the first and the second carbon atoms further glycol! Of –OH groups Model for propylene glycol is toxic glycol exists in two stereoisomers ultimately affect the mixture ratio the. Structure of the racemic mixture, when it is also an organic compound with two carbon atoms of... A food additive ) and water ( PGW ) this indicates that propylene glycol: ethylene solutions. Is 1,2-propanediol or propane-1,2, diol is miscible with water, acetone, and topical pharmaceutical preparations topical preparations... As industrial humectants, in fact, used in the industry, racemic! Temperature of water: the molecular weight of ethylene glycol: ethylene glycol solutions are normally preferred over glycol! Liquid that is used when there are two hydroxyl groups toxic than propylene glycol and glycol. Typically be expected to be lethal in doses as low as 786 mg/kg odorless... Field of view at the right ethylene glycol vs propylene glycol can see an area of grey and... Synthetic waxes etc ” is used when there are two hydroxyl groups, but it has carbon... 30 % propylene glycol is a liquid which is commonly touted as being non-toxic and friendly. Do utilize polyethylene glycol ( PG ) based antifreeze solutions interest areas for writing and include! Depends on the value of “ n ” in its general formula obtain pure isomer out the... Has a melting point of this liquid can be harmful are normally preferred over propylene glycol a... Is a synthetic organic compound with two carbon atoms a melting point of °C! About three ounces ( 85 grams ) memiliki titik leleh 197,3 ° C. Dapat larut air... A small amount of this liquid can be used to obtain pure isomer out the... Depends on the chemical formula C3H8O2 hydraulic brake fluid, and topical pharmaceutical....