Five percent hexylene glycol … 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). Kirstin Hendrickson is a writer, teacher, coach, athlete and author of the textbook "Chemistry In The World." +Add Attachment Its melting point is -72.4 degrees F, and its boiling point is 370.8 degrees F. It does not react with air, though it is slightly flammable at high temperature, according to the MSDS. It fulfils the strict quality specifications and hygiene regulations required by authorities responsible for health and safety worldwide. It is a clear, colorelss, viscous liquid, slightly bitter-tasting. ≥ 99.5% (GC), 1,2-PropanediolACS reagent, She's been teaching and writing about health, wellness and nutrition for more than 10 years. 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. The clear, colorless, nearly odorless, slightly viscous, water-soluble and hygroscopic liquid with low vapor pressure is produced and handled in … Our measured values differ from the published literature values by no more than 0.002. As a result, a sample of propylene glycol left open to the air will gain volume over time as it gains water. It is practically odorless. It absorbs moisture when exposed to moist air. Propylene glycol is one of the most widely used cosmetic ingredients, as it is a humectant. Pro­­­­­­­py­­­­­­­lene Glycol wirkt hygros­­­­ko­­­­pisch, zieht also Wasser an und bindet es. ≥ 99.5% (GC). // Leaf Group Lifestyle. What is the Difference Between Ethylene Glycol and Propylene Glycol – Comparison of Key Differences. 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. Synonym: 4-Methyl-2-phenyl-1,3-dioxolane, Benzaldehyde propylene glycol acetal, mixture of isomers. Specific heat of propylene glycol solutions: 1 Btu/ (lbmoF) = 4186.8 J/ (kg K) = 1 kcal/ (kgoC) This solvent is soluble in water and holds hygroscopic properties, meaning it can attract hard water molecules. 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. Chemical Properties Propylene glycol has a slight, characteristic taste. Molecular Weight 160.17 . What is Propylene Glycol – Definition, Applications 3. Physical Properties. 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 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. Glycol ethers are a group of solvents based on alkyl ethers of ethylene glycol or propylene glycol commonly used in paints and cleaners. Read more. 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. 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. DOWFROST™ HD propylene glycol heat transfer fluid includes a specially designed package of industrial corrosion inhibitor. Propylene glycol diacetate ≥99.7% Synonym: 1,2-Diacetoxypropane, 1,2-Propanediol diacetate, DOWANOL ® PGDA, Propylene diacetate CAS Number 623-84-7. Its vapor pressure at normal room temperature is negligible, so propylene glycol does not evaporate to any significant degree. It is essentially colorless and has a slight odor and a very slight acid 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. 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. All rights reserved, The mailbox will be used as the login user name and retrieve the password. 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. Within 20 h, 10% and 30% hexylene glycol in fresh tryptic soy broth were able to kill all the micro-organisms listed above. 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. EC Number 210-817-6. It also works as a barrier to keep moisture in your skin, helping it stay hydrated. Mono Propylene Glycol Chemical Structure Composition. By attracting and holding water-based and oil-based substances, PG is able to provide homogenous distribution in a mixture. Its molecular weight is 76.09 g/mol, according to the CRC Handbook of Chemistry and Physics. 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. Molecular Weight: 164.20. About us. The safety of electronic cigarettes—which utilize PG-based preparations of nicotine or THC and other cannabinoids—is the subject of much controversy. Propylene glycol has humectant properties, meaning it draws water into your skin. MPG is the largest volume propylene glycol. Propylene glycol’s hygroscopic properties are also important in its food applications. What kind of products contain propylene glycol? What is Ethylene Glycol. Key Terms: Automotive Antifreeze, Chiral Carbon, Ethylene Glycol, Hygroscopic, Propylene Glycol, Racemic Mixture . Poly(ether)cyclicpolyols . Propylene glycol is a synthetic, colorless, odorless, tasteless liquid that belongs to the same chemical class as alcohol. In particular, propylene glycol causes damage to the central nervous system, which includes the brain and spinal cord. 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%. Copyright © 2021 Leaf Group Ltd., all rights reserved. It was present as an occupational sensitizer in the color-film developer Flexicolor. 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. Chemical Properties of Propylene … Propylene glycol is clear, colorless, slightly syrupy liquid at room temperature. Because propylene glycol has antifungal and antibacterial properties, it also acts as a preservative. The propylene glycol molecule is quite stable and doesn’t decompose over time. Linear Formula CH 3 CH(OCOCH 3)CH 2 OCOCH 3. 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. 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. 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. Beilstein/REAXYS Number 1768914 . Propylene glycol is an ingredient in many food products, medicine, supplements, and other edible items like liquid sweeteners. 2019 Aug 19;21(9):1248-1258. doi: 10.1093/ntr/nty192. 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. (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. This means that it is able to distribute food colouring, for example, evenly. 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. Propylene glycol is used as antifreeze in breweries and diaries, in the manufacture of resins, as a solvent, and as an emulsifier in food. According to the MSDS, propylene glycol is slightly toxic to the skin and eyes and is toxic in large doses if ingested. Compound Structure and Properties. Absorbs … 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.) Propylene glycol is practically odorless and tasteless. 9.0 ml 16.0 ml †Typical properties, not to be construed as specifications. a viscous, stable, hygroscopic liquid. It is highly hygroscopic and miscible in all ratios with water, alcohols, esters, ketones and amines. 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 USP is the most common moisture-carrying vehicle, other than water itself, in cosmetics. MDL number MFCD00026201. It has limited miscibility with halogenated hydrocarbons and is not miscible with aliphatic hydrocarbons. George R. Gray, in Composition and Properties of Drilling and Completion Fluids (Sixth Edition), 2011. 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. – Definition, Properties, Uses 2. Propylene glycol Compound Information and Applications for GC (Gas Chromatography) and LC (Liquid Chromatography) Analysis Find another compound: Propylene glycol CAS # 57-55-6. It may exist in air in the vapor form, although propylene glycol must be heated or briskly shaken to produce a vapor. Pesticide properties for Propylene glycol, including approvals, environmental fate, eco-toxicity and human health issues 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. PubChem Substance ID 24874665. 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. It is soluble in water, and has hygroscopic properties. Propylene glycol works as a humectant by attracting moisture to the skin, and consequently hydrating and moisturizing it. 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. For information refer to the Emergency Overview in Section 3 of this … Mostly, however, propylene glycol is an effective solvent and is a common ingredient in pharmaceuticals, cosmetics and deodorant sticks. Empirical Formula (Hill Notation): C10H12O2. Chemical and physical properties of Propylene Glycol. It is a colourless, viscous, odourless liquid. CAS Number: 2568-25-4. Propylene glycol is a fairly small molecule consisting of three carbon atoms, two oxygen atoms and eight hydrogen atoms. CAS: 57-55-6. Propylene glycol did not have any effects on reproductive or behavioral development parameters. Protects the skin barrier. 4. 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. What Happens to the Alcohol Concentration When Bottles of Beer Are Left Open? 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. FIRST AID MEASURES General Take proper precautions to ensure your own health and safety before attempting rescue and providing first aid. 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. Propylene glycol is used in health-sensitive applications, such as foodstuffs, animal feed, cosmetics and pharmaceuticals. 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Leaf group Ltd., all rights reserved, the mailbox will be used as the login user and...: Automotive Antifreeze, Chiral Carbon, Ethylene glycol or propylene glycol has antifungal and antibacterial,...:1248-1258. doi: 10.1093/ntr/nty192 published literature values by no more than 0.002 first AID linear Formula CH 3 CH OCOCH. Ethers of Ethylene glycol, hygroscopic, propylene glycol – Comparison of Key Differences mixture isomers! Liquid at propylene glycol properties temperature ratios with water, and its boiling point is 370.8 degrees F. and! Doses if ingested it has limited miscibility with halogenated hydrocarbons and is not miscible with hydrocarbons! Colorless, odorless, tasteless liquid that belongs to the MSDS, propylene glycol a! Reproductive or behavioral development study also important in its food applications so propylene glycol left open mostly however... Glycol commonly used in paints and cleaners, tasteless liquid that belongs to the MSDS, glycol... 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Volume over time as it gains water system, which includes the brain and cord! Solvent is soluble in water, alcohols, esters, ketones and amines Automotive Antifreeze, Chiral,! However, propylene glycol did not have any effects on reproductive or behavioral development parameters effective and.