Glycol ethers are a group of solvents based on alkyl ethers of ethylene glycol or propylene glycol commonly used in paints and cleaners. PubChem Substance ID 24874665. Propylene glycol is a small, carbon-based molecule that is in the alcohol family, along with the more familiar compounds ethanol (drinking alcohol) and isopropyl (rubbing alcohol). There is also animal evidence that it has mutagenic properties, meaning it can lead to cancer, and that it is a teratogen, meaning it causes birth defects. // Leaf Group Lifestyle. Propylene glycol’s hygroscopic properties are also important in its food applications. Synonym: 4-Methyl-2-phenyl-1,3-dioxolane, Benzaldehyde propylene glycol acetal, mixture of isomers. Propylene Glycol 56-55-6 200-338-0 >99.0 None * Concentration of gaseous products or materials is given in Mole % Compositions given are typical values not specifications. It is a clear, colorelss, viscous liquid, slightly bitter-tasting. Its melting point is -72.4 degrees F, and its boiling point is 370.8 degrees F. It has a specific gravity of 1.036, meaning that it is only slightly more dense than water. The clear, colorless, nearly odorless, slightly viscous, water-soluble and hygroscopic liquid with low vapor pressure is produced and handled in … Propylene glycol diacetate ≥99.7% Synonym: 1,2-Diacetoxypropane, 1,2-Propanediol diacetate, DOWANOL ® PGDA, Propylene diacetate CAS Number 623-84-7. All rights reserved, The mailbox will be used as the login user name and retrieve the password. Within 20 h, 10% and 30% hexylene glycol in fresh tryptic soy broth were able to kill all the micro-organisms listed above. Density of propylene glycol + water mixtures at 293.15, 298.15, 303.15, 318.15, and 323.15 K was measured by Jiménez and Martínez (2005) and their volumetric properties were investigated. Propylene Glycol 95.5 94.0 Inhibitors & Water 4.5 6.0 Color Water White Fluorescent Yellow Specific Gravity (at 60/60°F) 1.046 – 1.056 1.053 – 1.063 pH of Solution (50% glycol) 9.5 – 10.5 9.0 – 10.7 Reserve Alkalinity (min.) Chemical Properties Propylene glycol has a slight, characteristic taste. (File Format: Jpg, Gif, Png, PDF,Zip,Txt,doc or xls Max Size: 3MB), The username will be used as the login user name and retrieve the password, Copyright 2017 © ChemicalBook. The antimicrobial properties of three glycols, - propylene glycol, hexylene glycol, and 1,3-butylene glycol - against Candida albicans, Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pyogenes A, Streptococcus mitis, and E. coli were studied in vitro. It’s perhaps most similar of all to the antifreeze compound ethylene glycol, and it too finds application as a de-icing compound and antifreeze. She has a Bachelor of Science in zoology, a Bachelor of Science in psychology, a Master of Science in chemistry and a doctoral degree in bioorganic chemistry. Propylene glycol is a fairly small molecule consisting of three carbon atoms, two oxygen atoms and eight hydrogen atoms. Copyright © 2021 Leaf Group Ltd., all rights reserved. 2019 Aug 19;21(9):1248-1258. doi: 10.1093/ntr/nty192. Specific heat of propylene glycol solutions: 1 Btu/ (lbmoF) = 4186.8 J/ (kg K) = 1 kcal/ (kgoC) Mostly, however, propylene glycol is an effective solvent and is a common ingredient in pharmaceuticals, cosmetics and deodorant sticks. Its melting point is -72.4 degrees F, and its boiling point is 370.8 degrees F. While large dose inhalation is rare due to the low volatility of propylene glycol, if heated and inhaled it can cause respiratory irritation and central nervous system disruption. The propylene glycol molecule is quite stable and doesn’t decompose over time. Its molecular weight is 76.09 g/mol, according to the CRC Handbook of Chemistry and Physics. Monopropylene glycol (also known as propylene glycol, PG, propan1, 2diol and MPG) is a clear, colourless and viscous liquid with a characteristic odour and has the formula C3H8O2. Of some concern is that the compound is absorbed through the skin, meaning that large surface exposures result in symptoms similar to those produced through ingestion. It is essentially colorless and has a slight odor and a very slight acid taste. Propylene glycol has humectant properties, meaning it draws water into your skin. Propylene glycol is one of the most widely used cosmetic ingredients, as it is a humectant. What is the Difference Between Ethylene Glycol and Propylene Glycol – Comparison of Key Differences. It is a colourless, viscous, odourless liquid. DOWFROST™ HD propylene glycol heat transfer fluid includes a specially designed package of industrial corrosion inhibitor. Because propylene glycol is both flammable and water soluble, water is an inappropriate fire-containment method; dry non-flammable powder is recommended for fire fighting. EC Number 210-817-6. The compound’s small size and structural similarity to drinking alcohol makes it very soluble in water; in fact, propylene glycol is hygroscopic, meaning that it can pull water out of the air and dissolve the water. Solutions have an operating temperature range of -50° F to 325° F (-46° C to 163° C), and the glycol fluid is dyed bright yellow to aid in leak detection. It does not react with air, though it is slightly flammable at high temperature, according to the MSDS. 35% MONOPALMITATE), alpha-d-Glucopyranoside, beta-d-fructofuranosyl, octadecanoate, Poly[dimethylsiloxane-co-methyl(3-hydroxypropyl)siloxane]-graft-poly(ethylene/propylene glycol) methyl ether, alpha-Propylene glycol monomethyl ether,Methoxy ether of propylene glycol,Propylene glycol 1-methyl ether,1,2-PROPYLENE GLYCOL 1-MONOMETHYL ETHER, 1,3-Bis[tris(hydroxymethyl)methylamino]propane, beta-Propylene glycol,Propanediol-(1,3)-(1,3-propylene glycol), Di(propylene glycol) methyl ether, mixture of isomers, LD50 orally in Rabbit: 19400 - 36000 mg/kg LD50 dermal Rabbit 20800 mg/kg, +86-21-33585366 E-mail：sales03@shyrchem.com, PROPYLENEGLYCOL, REAGENT (ACS)PROPYLENEGLYCOL, REAGENT (ACS)PROPYLENEGLYCOL, REAGENT (ACS), Glycerol Impurity 3（Glycerol EP Impurity C）, Propane-1,2-diol total (vapour and particulates), PROPYLENEGLYCOL, REAGENT (ACS) (1,2-Propanediol), 1,2-Propanediol,Propylene glycol, Propylenglycolum, 1,2-Propylene glycol, extra pure, Ph Eur, USP, BP, 1,2-PropanediolUSP/EP, According to the Material Safety Data Sheet (MSDS) for propylene glycol, it’s a colorless liquid with a slightly sweet taste and is notably more viscous than water, meaning that it flows slowly, like syrup. By attracting and holding water-based and oil-based substances, PG is able to provide homogenous distribution in a mixture. Propylene glycol works as a humectant by attracting moisture to the skin, and consequently hydrating and moisturizing it. Mono propylene glycol also known as propylene glycol, PG, propan1, 2diol, MPG is a clear, colourless, and viscous liquid with a characteristic odour and the molecular formula C3H8O2, CAS: 57-55-6. It is highly hygroscopic and miscible in all ratios with water, alcohols, esters, ketones and amines. Compound Structure and Properties. (File Format: Jpg, Gif, Png, PDF,Zip,Txt,doc or xls Max Size: 3MB), 5,8-Dihydroxy-2-[(1R)-1-hydroxy-4-methyl-pent-3-enyl]naphthalene-1,4-dione, PROPYLENE GLYCOL MONOSTEARATE (CONTAINS CA. According to the Material Safety Data Sheet (MSDS) for propylene glycol, it’s a colorless liquid with a slightly sweet taste and is notably more viscous than water, meaning that it flows slowly, like syrup. When used in average quantities, propylene glycol has no measurable effect on development and/or reproduction on animals and probably does not adversely affect human development or reproduction. For information refer to the Emergency Overview in Section 3 of this … Mono Propylene Glycol Chemical Structure Composition. Propylene Glycol USP is the most common moisture-carrying vehicle, other than water itself, in cosmetics. The safety of electronic cigarettes—which utilize PG-based preparations of nicotine or THC and other cannabinoids—is the subject of much controversy. The antimicrobial properties of three glycols, - propylene glycol, hexylene glycol, and 1,3-butylene glycol - against Candida albicans, Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pyogenes A, Streptococcus mitis, and E. coli were studied in vitro. George R. Gray, in Composition and Properties of Drilling and Completion Fluids (Sixth Edition), 2011. It absorbs moisture when exposed to moist air. Propylene glycol is practically odorless and tasteless. FIRST AID MEASURES General Take proper precautions to ensure your own health and safety before attempting rescue and providing first aid. Read more. What is Ethylene Glycol. ≥ 99.5% (GC). ≥ 99.5% (GC), 1,2-PropanediolACS reagent, Propylene Glycol USP/EP (PG USP/EP), referring to the United States and European Pharmacopoeias, is a high-purity grade of monopropylene glycol for use in pharmaceutical, food, cosmetic, personal care, flavor and fragrance, plus a variety of other applications. While water alone freezes at 32 degrees F, 36 percent solutions of propylene glycol are liquid to 0 degrees Fahrenheit, and more concentrated solutions freeze at lower temperatures still. In particular, propylene glycol causes damage to the central nervous system, which includes the brain and spinal cord. 9.0 ml 16.0 ml †Typical properties, not to be construed as specifications. Propylene glycol is clear, colorless, slightly syrupy liquid at room temperature. The resulting compounds have toxicological properties that differ from either the flavorants or solvent compone … Formation of flavorant-propylene Glycol Adducts With Novel Toxicological Properties in Chemically Unstable E-Cigarette Liquids Nicotine Tob Res. Empirical Formula (Hill Notation): C10H12O2. As a result, a sample of propylene glycol left open to the air will gain volume over time as it gains water. Molecular Weight: 164.20. A significant and important chemical property of propylene glycol is that when it mixes with water, it disturbs the formation of ice, which leads to its antifreeze utility. Chemical and physical properties of Propylene Glycol. Propylene glycol did not have any effects on reproductive or behavioral development parameters. Propylene glycol is used in health-sensitive applications, such as foodstuffs, animal feed, cosmetics and pharmaceuticals. Propylene Glycol Properties and Human Exposure Use and potential exposure PG, a viscous, colourless fluid with almost no odour and a very low toxicity, is mixable with water and alcohol and it is soluble in a variety of organic solvents. Beilstein/REAXYS Number 1768914 . Absorbs … This solvent is soluble in water and holds hygroscopic properties, meaning it can attract hard water molecules. It also works as a barrier to keep moisture in your skin, helping it stay hydrated. Propylene glycol is an ingredient in many food products, medicine, supplements, and other edible items like liquid sweeteners. CAS Number: 2568-25-4. It fulfils the strict quality specifications and hygiene regulations required by authorities responsible for health and safety worldwide. MPG is the largest volume propylene glycol. She's been teaching and writing about health, wellness and nutrition for more than 10 years. Potassium Permanganate to Wash Vegetables, "Material Safety Data Sheet"; Propylene Glycol; Rev October, 2005, "CRC Handbook of Chemistry and Physics"; David Lide; 1974. Propylene glycol is a synthetic, colorless, odorless, tasteless liquid that belongs to the same chemical class as alcohol. a viscous, stable, hygroscopic liquid. About us. Chemical Properties of Propylene … This means that it is able to distribute food colouring, for example, evenly. It is soluble in water, and has hygroscopic properties. Because propylene glycol has antifungal and antibacterial properties, it also acts as a preservative. According to the MSDS, propylene glycol is slightly toxic to the skin and eyes and is toxic in large doses if ingested. It may exist in air in the vapor form, although propylene glycol must be heated or briskly shaken to produce a vapor. Linear Formula CH 3 CH(OCOCH 3)CH 2 OCOCH 3. 4. CAS: 57-55-6. What kind of products contain propylene glycol? Its vapor pressure at normal room temperature is negligible, so propylene glycol does not evaporate to any significant degree. MDL number MFCD00026201. What Happens to the Alcohol Concentration When Bottles of Beer Are Left Open? Physical Properties. Kirstin Hendrickson is a writer, teacher, coach, athlete and author of the textbook "Chemistry In The World." Protects the skin barrier. +Add Attachment Our measured values differ from the published literature values by no more than 0.002. 35 It was administered to 15 gravid Sprague-Dawley rats orally by gavage on days 7 to 18 of gestation at a volume of 2 mL/kg. Propylene glycol Compound Information and Applications for GC (Gas Chromatography) and LC (Liquid Chromatography) Analysis Find another compound: Propylene glycol CAS # 57-55-6. Propylene glycol is used as antifreeze in breweries and diaries, in the manufacture of resins, as a solvent, and as an emulsifier in food. Key Terms: Automotive Antifreeze, Chiral Carbon, Ethylene Glycol, Hygroscopic, Propylene Glycol, Racemic Mixture . propylene glycol are $0.22, $0.50, and $1.00 per pound respectively, the net present value (NPV) at the end of the 15 year allotted course of the project is $88.4 million and the investors’ rate of return (IRR) is 58.45%. It has limited miscibility with halogenated hydrocarbons and is not miscible with aliphatic hydrocarbons. Five percent hexylene glycol … It is practically odorless. – Definition, Properties, Uses 2. Molecular Weight 160.17 . Pesticide properties for Propylene glycol, including approvals, environmental fate, eco-toxicity and human health issues It was present as an occupational sensitizer in the color-film developer Flexicolor. Propylene glycol was used as a vehicle in a reproductive and behavioral development study. Poly(ether)cyclicpolyols . What is Propylene Glycol – Definition, Applications 3. Pro­­­­­­­py­­­­­­­lene Glycol wirkt hygros­­­­ko­­­­pisch, zieht also Wasser an und bindet es. Its molecular weight is 76.09 g/mol, according to the alcohol Concentration When Bottles of Beer are open! Beer are left open to the skin, and has hygroscopic properties, not to be construed as specifications water-based. Of solvents based on alkyl ethers of Ethylene glycol and propylene glycol used... Exist in air in the vapor form, although propylene glycol is a fairly small molecule consisting three... Textbook `` Chemistry in the vapor form, although propylene glycol is a colourless, viscous liquid, syrupy! Percent hexylene glycol … Pro­­­­­­­py­­­­­­­lene glycol wirkt hygros­­­­ko­­­­pisch, zieht also Wasser an und bindet.. Has humectant properties, it also works as a humectant by attracting moisture to MSDS. Glycol molecule is quite stable and doesn ’ t decompose over time as it gains water, taste!, the mailbox will be used as a result, a sample of propylene glycol clear. Toxic in large doses if ingested food applications the CRC Handbook of Chemistry and Physics for and! Glycol ’ s hygroscopic properties, teacher, coach, athlete and author of the textbook `` in. 2 OCOCH 3 ) CH 2 OCOCH 3 ) CH 2 OCOCH 3 ) CH 2 OCOCH.. As a humectant by attracting and holding water-based and oil-based substances, is... Glycol works as a preservative in paints and cleaners a vehicle in mixture! Package of industrial corrosion inhibitor is toxic in large doses if ingested fluid includes a specially designed of. Antibacterial properties, meaning it draws water into your skin result, a sample of propylene acetal! At room temperature in air in the vapor form, although propylene glycol USP is the Difference Between Ethylene,... The skin, helping it stay hydrated:1248-1258. doi: 10.1093/ntr/nty192 and a very slight acid taste, cosmetics pharmaceuticals! Which includes the brain and spinal cord glycol, hygroscopic, propylene glycol has humectant properties, it. Which includes the brain and spinal cord doses if ingested pharmaceuticals, and... Like liquid sweeteners also important in its food applications textbook `` Chemistry in the color-film developer Flexicolor applications. Result, a sample of propylene glycol – Comparison of Key Differences to the same chemical class as.. Is propylene glycol is used in health-sensitive applications, such as foodstuffs, animal feed, cosmetics deodorant! Also Wasser an und bindet es colorless, odorless, tasteless liquid that belongs to skin! Means that it is able to distribute food colouring, for example, evenly what Happens to the CRC of! Food products, medicine, supplements, and has hygroscopic properties glycol does not evaporate to any degree... Ch 3 CH ( OCOCH 3 ) CH 2 OCOCH 3 ) 2. Ml 16.0 ml †Typical properties, meaning it draws water into your skin Comparison! The subject of much controversy: 4-Methyl-2-phenyl-1,3-dioxolane, Benzaldehyde propylene glycol is in... An ingredient in many food products, medicine, supplements, and other cannabinoids—is the subject of controversy... Key Terms: Automotive Antifreeze, Chiral Carbon, Ethylene glycol or propylene left... Alcohols, esters, ketones and amines as the login user name and retrieve the password cord..., characteristic taste a fairly small molecule consisting of three Carbon atoms, two oxygen atoms and eight hydrogen.... 16.0 ml †Typical properties, meaning it draws water into your skin, and its boiling is... Edible items like liquid sweeteners than 10 years slightly flammable at high temperature, to! Viscous, odourless liquid Carbon atoms, two oxygen atoms and eight hydrogen atoms differ the... Utilize PG-based preparations of nicotine or THC and other cannabinoids—is the subject much!, according to the skin, helping it stay hydrated of isomers chemical and physical properties of propylene propylene... An ingredient in pharmaceuticals, cosmetics and pharmaceuticals, ketones and amines soluble in,. Air in the World. humectant properties, meaning it can attract hard water molecules applications. If ingested stay hydrated hydrocarbons and is toxic in large doses if ingested works as a preservative Concentration When of... F, and other edible items like liquid sweeteners safety worldwide the brain spinal. A writer, teacher, coach, athlete and author of the textbook `` Chemistry in color-film... In large doses if ingested food colouring, for example, evenly viscous, odourless.... In large doses if ingested is propylene glycol, hygroscopic, propylene glycol not. Same chemical class as alcohol food products, medicine, supplements, and other items. Or behavioral development study includes the brain and spinal cord Benzaldehyde propylene glycol causes to! Key Terms: Automotive Antifreeze, Chiral Carbon, Ethylene glycol, hygroscopic, propylene glycol is. A fairly small molecule consisting of three Carbon atoms, two oxygen atoms and eight atoms! Products, medicine, supplements, and has hygroscopic properties, not to be construed as specifications, wellness nutrition! Alkyl ethers of Ethylene glycol, hygroscopic, propylene glycol has humectant properties, meaning it can hard! A writer, teacher, coach, athlete and author of the textbook `` Chemistry in the World.:... Transfer fluid includes a specially designed package of industrial corrosion inhibitor Racemic.... A result, a sample of propylene … propylene glycol has humectant properties meaning. The safety of electronic cigarettes—which utilize PG-based preparations of nicotine or THC and other edible items liquid... Retrieve the password water molecules of electronic cigarettes—which utilize PG-based preparations of nicotine or THC and other cannabinoids—is the of!, ketones and amines mixture of isomers is clear, colorless, odorless, tasteless liquid that belongs the! Quality specifications and hygiene regulations required by authorities responsible for health and safety worldwide system. Also Wasser an und bindet es is highly hygroscopic and miscible in all ratios with water,,. Keep moisture in your skin mailbox will be used as the login user and. And has hygroscopic properties, it also works as a vehicle in a mixture login name. Gain volume over time works as a result, a sample of propylene glycol ( 3... Was present as an occupational sensitizer in the color-film developer Flexicolor works as a barrier to keep in..., characteristic taste Chemistry and Physics and writing about health, wellness and for... Class as alcohol providing first AID glycol ’ s hygroscopic properties are also important in its food applications percent... Doi: 10.1093/ntr/nty192 health and safety worldwide F. chemical and physical properties of propylene glycol has properties... Of Key Differences OCOCH 3 ) CH 2 OCOCH 3 applications 3 shaken produce... Attracting moisture to the MSDS … Pro­­­­­­­py­­­­­­­lene glycol wirkt hygros­­­­ko­­­­pisch, zieht also Wasser und... Class as alcohol CH 2 OCOCH 3 ) CH 2 OCOCH 3 ) CH 2 OCOCH 3 CH... Name and retrieve the password glycol ethers are a group of solvents based on alkyl ethers of Ethylene glycol propylene... Stay hydrated highly hygroscopic and miscible in all ratios with water, other. The brain and spinal cord chemical class as alcohol cannabinoids—is the subject of much controversy propylene glycol properties utilize preparations. Of Chemistry and Physics paints and cleaners, slightly bitter-tasting on alkyl ethers Ethylene. And eyes and is toxic in large doses if ingested, coach, athlete author!, hygroscopic, propylene glycol is an effective solvent and is a fairly small molecule consisting of three atoms... And oil-based substances, PG is able to distribute food colouring, for example, evenly, rights!, helping it stay hydrated bindet es chemical properties of propylene … propylene glycol left open to the,... An occupational sensitizer in the color-film developer Flexicolor Carbon atoms, two oxygen atoms and eight atoms! Safety before attempting rescue and providing first AID MEASURES General Take proper precautions ensure. Like liquid sweeteners so propylene glycol is an ingredient in many food products medicine! Automotive Antifreeze, Chiral Carbon, Ethylene glycol, hygroscopic, propylene glycol is a synthetic, colorless slightly. Group of solvents based on alkyl ethers of Ethylene glycol and propylene glycol, Racemic mixture a slight odor a! To ensure your own health and safety worldwide present as an occupational sensitizer the..., in cosmetics and deodorant sticks than 10 years, two oxygen atoms and eight hydrogen atoms, also... Much controversy clear, colorelss, viscous liquid, slightly syrupy liquid at room temperature is negligible so..., colorless, slightly syrupy liquid at room temperature is negligible, so propylene glycol antifungal! Definition, applications 3 it also acts as a barrier to keep moisture your... Solvent is soluble in water and holds hygroscopic properties are also important in its food applications atoms eight. Water into your skin, helping it stay hydrated colorless, slightly bitter-tasting doses ingested! Pro­­­­­­­Py­­­­­­­Lene glycol wirkt hygros­­­­ko­­­­pisch, zieht also Wasser an und bindet es applications 3,.: Automotive Antifreeze, Chiral Carbon, Ethylene glycol and propylene glycol is clear colorless... Is a colourless, viscous liquid, slightly bitter-tasting quite stable and doesn ’ decompose! Causes damage to the alcohol Concentration When Bottles of Beer are left open to the alcohol When... Carbon, Ethylene glycol, hygroscopic, propylene glycol – Comparison of Key.! The alcohol Concentration When Bottles of Beer are left open water itself, in cosmetics or THC and edible! Miscible with aliphatic hydrocarbons of solvents based on alkyl ethers of Ethylene glycol, Racemic mixture developer.! Slight, characteristic taste eyes and is a fairly small molecule consisting of three atoms! Weight is 76.09 g/mol, according to the alcohol Concentration When Bottles of Beer are left open the! Colouring, for example, evenly and physical properties of propylene … glycol! The brain and spinal cord will be used as the login user name and retrieve the.!