EC 226-285-3. It is used in things such as eye drops, laxatives, liquid capsules, oral liquids, ointment bases etc. I put quite a bit of research into this subject before writing it, and the sources are clearly presented at the bottom of the article. Each hydroxyl group is separately attache… The. In fact, although propylene glycol (or PG) is used in antifreeze as well, it’s only used in RV and Marine antifreeze, colored pink to designate it’s non-toxic qualities. This characteristic makes pentylene glycol a great ingredient to emulsify and thicken products. TO LEARN MORE ABOUT THE DETAILS OF THESE RELATIONSHIPS AND HOW PRODUCTS ARE RANKED ON OUR SITE, PLEASE READ THE "FULL DISCLOSURE" AND "METHODOLOGY" SECTIONS. No, this effect has only been seen in PG. Even the electronic cigarettes that DO utilize polyethylene glycol (PEG) come nowhere near this mark. Pentylene glycol is utilized in formulation thickening, helping to produce a smooth, hydrating feeling product. panel has deemed all the 1,2-glycols that are used in skincare formulations, safe for use. the not so good: It can cause minor irritation to the eyes and skin in some people. ‘Margin of safety of pentylene glycol using measurements of cutaneous absorption and volatility’, Regulatory Toxicology and Pharmacology, vol. The different chemical and physical properties result in different toxicology profiles and separate International … Antimicrobial and Preservative If you have sensitive skin that is prone to irritation, consult your dermatologist about whether this ingredient is best for you. It produces ethylene glycol when processed. They are, in fact, two different chemical compounds with the poly signifying the fact that it is a polymer. 1,5-Pentanediol is the organic compound with the formula HOCH 2 CH 2 CH 2 CH 2 CH 2 OH. Why propylene glycol versus ethylene glycol for winterization? Glycerin is also called glycerol. According to Herrmann, ethylene glycol (an ingredient used in antifreeze) is considered to be toxic and harmful, while propylene glycol is not. PEG is never a part of the process. Pentylene glycol does not have any evidence to suggest toxicity or carcinogenicity. It produces ethylene glycol when processed.”. There are 16 other 1,2-glycols, only four are used in skincare. ‘Safety Assessment of 1, 2-Glycols as Used in Cosmetics’, International Journal of Toxicology, vol. The results were not particularly promising for the industry (as these chemicals did show up, especially at high-voltages), but one caveat did stick out. This is however, not always the case. The 1,2-glycols are characterized by the presence of two hydroxyl or alcohol groups on the first and second attachment points along the carbon chain. Why is there a difference in the amount of propylene glycol that is acceptable in the U.S. vs. Europe? What Is Isohexadecane? Summary. document.write('<'+'div id="placement174783'+plc174783+'">'); Since about 20-30% of teens and young adults have tried vaping, this may now be the main source of exposure to PG. ‘1, 2- Alkanediols for Cosmetic Preservation’, Cosmetics and Toiletries. 50C1307PZG. AdButler.ads.push({handler: function(opt){ AdButler.register(165395, 174783, [300,250], 'placement174783'+opt.place, opt); }, opt: { place: plc174783++, keywords: abkw, domain: 'ads.ecigmedia.com', click:'CLICK_MACRO_PLACEHOLDER' }}); © 2017 Ejuice Econnoisseur. Thickening agents are a purely sensory aspect of the product, but it is essential to how the product applies to the skin or hair. Please google Propylene glycol and status epilepticus, To help you choose the correct glycol product please refer to the chart below. Please keep your facts straight. and How Can I Give... Killer Kustard E-liquid by Vapetasia Review. 106-111. Study: http://ntr.oxfordjournals.org/content/early/2014/05/14/ntr.ntu078.full 2, pp. Synonyms : Synonyms for propylene glycol include. Johnson, W et al. Pentane-1,2-diol. Caprylyl glycol (1,2-octanediol) is an alcohol derived from caprylic acid, an eight carbon saturated fatty acid found in the milk of some mammals, as well as palm and coconut oils. It is not, in fact, used in any anti-freeze. Ok… now lets break down all of the chemical compounds that big tobacco puts into cigarettes. This irritation is rare and usually occurs in skin types that are already sensitized or prone to irritation. Their molecular formulas are different; thus they have some different physical properties. 2012. Being a large organic alcohol, propylene glycol provides excellent moisturizing properties to the skin. To help you understand better and learn some background information, pros and cons, and differences we created this tutorial. Vegetable Glycerin (VG) e-juice. var plc174783 = window.plc174783 || 0; PEG and Ethylene Glycol are different substances. e-Juices Used: http://ntr.oxfordjournals.org/content/early/2014/05/14/ntr.ntu078/T1.expansion.html. Propylene glycol is a synthetic food additive that belongs to the same chemical group as alcohol. Ethylene glycol has two carbon atoms, and propylene glycol has three carbon atoms per molecule. Dr. O’Keefe: “Food additives are regulated in the U.S. based on their function and in what food category they can be used. Caprylic acid is classified as a medium chain triglyceride (MCT) with potent antibacterial, antifungal, and anti-inflammatory properties, according to Healthline.Caprylyl glycol can also be synthetically produced. This danger is present in PEG, but as stated above, not enough to cause harm. You still have at least one hugely inaccurate statement in your article which, oddly enough, is the same misunderstanding which started this whole anitfreeze debate to begin with. I am a vaper myself and consider this technology one of the most effective means of tobacco cessation known to man. Side by Side Comparison – Dipropylene Glycol vs Propylene Glycol in Tabular Form 5. Propylene glycol is one of those chemicals. However, there are industries that like more a particular glycol than the other one. Oh, and I took your advice. It is labeled an organic compound in chemistry due to its carbon attributes. A mixture of basically 40% PEG, 30% PG, and 15% VG showed absolutely ZERO presence of the carcinogenic chemicals. Both products are two chemical compounds used as some low temperature heat transfer fluids. “Polyethylene glycol is, in fact, used in antifreeze because it lowers the freezing temperature of water. Ethylene glycol and propylene glycol are organic compounds with alcohol functional groups. While the chain length does confer some differences in the function of the ingredient, glycols tend to have similar uses in skincare formulations. The companies simply decided it was easier to change to a different, and actually inferior, compound than to explain to the masses the benefits and differences between “anti-freeze” and polyethylene glycol. 31, iss.   Side Effects of Propylene Glycol . What I was pointing out was that despite PEG NOT BEING DANGEROUS, the E-cig industry switched to PG just to placate the worry-warts out there. It is said to be ‘generally recognized as safe’ (GRAS List). Synergetic ingredients: Works well with most ingredients. im getting mine from virgin vape. Polyethylene glycol is, in fact, used in antifreeze because it lowers the freezing temperature of water. ‘1, 2- Alkanediols for Cosmetic Preservation’, Cosmetics and Toiletries. Pentane diol vs. pentylene glycol. It is also present in a number of supermarket antifreeze products. CAS Registry Number. Propylene Glycol vs. Propanediol. THIS SITE IS FOR INFORMATIONAL PURPOSES ONLY AND SHOULD NOT BE USED AS A SUBSTITUTE FOR ADVICE OR TREATMENT FROM A QUALIFIED MEDICAL PROFESSIONAL. Of course it was not usually inhaled, but a food additive. Of the two, PG is slightly better, which is why most of the E-cigarette industry has switched from PEG to PG. Acetyl glucosamine is a skin-replenishing ingredient that helps to reduc... What Is Acetyl Hexapeptide 8? PG is metabolised by the human body into chemicals that are naturally occurring in normal, human metabolic functions. Propylene glycol has been designated by the FDA as “generally recognized as safe,” or GRAS, for consumption; however, according to the Federal Agency for Toxic Substances and Disease Registry, "We have little information about what happens to propylene glycol in the air." What Are The Benefits of Pentylene Glycol? Reality, A Comprehensive List, Scientific Evidence in Support of Electronic Cigarette Technology, http://ntr.oxfordjournals.org/content/early/2014/05/14/ntr.ntu078.full, http://ntr.oxfordjournals.org/content/early/2014/05/14/ntr.ntu078/T2.expansion.html, http://ntr.oxfordjournals.org/content/early/2014/05/14/ntr.ntu078/T1.expansion.html, Discovering Slim’s E-Juice E-Juice Flavors, Pineapple Grapefruit E-liquid by Juice Head Freeze Review. ‘Safety Assessment of 1, 2-Glycols as Used in Cosmetics’, International Journal of Toxicology, vol. 31, iss. The concern arises when propylene glycol is heated up and inhaled. Main Difference – Ethylene Glycol vs Propylene Glycol. All skin types except those that have an identified allergy to it. Pentylene Glycol – the even more compatible “Green variant” Recently, there is an even more compatible version of pentylene glycol, based on by-products from manufacturing processes based on sugarcane residues and corn spindles. It is a diol, or double alcohol, which means that people who are not permitted to use alcohol would not be able to use any fragrance oils with it as a carrier oil. All rights reserved. Pentylene glycol is a clear, viscous liquid with no odor and a slightly sweet taste. Encourage them to do more research on their own, and at the very least to read through the sources listed below. In most formulations, the concentration of pentylene glycol will range from 0.001-5%. The main … Go! In fact, although propylene glycol (or PG) is used in antifreeze as well, it’s only used in RV and Marine antifreeze, colored pink to designate it’s non-toxic qualities. Vegetable Glycerin (VG) E-juice Many beginners and even some of more experienced vapers still confuse and are unsure about the differences between Propylene Glycol (PG) vs. Pentylene glycol also has the added benefit of acting as a preservative, which minimizes the need to add other preservatives to formulations. FDA UNII. At low temperatures, propylene glycol solutions become considerably more viscous than ethylene glycol solutions. Who is it for? Laboratory studies on the inhalation of vaporized/aerosolized PEG. Propylene glycol contains 3 carbon atoms, while butylene glycol is a little larger and contains 4 carbon atoms. OTHER COMPANIES’ MARKS USED ON THIS SITE REMAIN THE INTELLECTUAL PROPERTY OF THEIR RESPECTIVE OWNERS. Pentylene glycol is part of the 1,2-glycol family of ingredients. the good:Pentylene glycol helps to stabilize and thicken products. Propylene glycol, food or technical grade, is used in applications where human or incidental food contact is a concern. Cosmetic Ingredient Review, 2011. I should take another reading in a few years just to be sure, though, right? It can act as a solvent and stabilizer for many products containing oils. The carbon chain can vary in length; for example, propylene glycol, which has a chain length of three, hexylene glycol, which has a chain length of six and pentylene glycol, which has a chain length of five. This antifreeze scare is nothing new. For example, in aeroplane de-icing propylene glycol is used for both removing ice and contaminates from an aeroplane as well as being used during winter and periods of snowfall to actively prevent accumulation of snow and ice. if (!window.AdButler){(function(){var s = document.createElement("script"); s.async = true; s.type = "text/javascript";s.src = 'http://ads.ecigmedia.com/app.js';var n = document.getElementsByTagName("script")[0]; n.parentNode.insertBefore(s, n);}());} The Food and Drug Administration (FDA) has classified propylene glycol as an additive that is generally recognized as safe for use in food. They found that one of the main ingredients in E-liquid was polyethylene glycol, which is used in antifreeze and is fairly toxic to humans in large quantities. 87, pp. If you want to make sure that your ingredient is plant based and approved to be used in "natural" or "organic" formulations, make inquiries by your supplier. The term glycol is used when there are two hydroxyl groups present in neighboring carbon atoms. E-Cigarettes: Myth Vs. Everything You Need to Know about Hyaluronic Acid. Propylene glycol has a low boiling point and moderate freezing point. Registry Numbers. It is important to remember that the results of one study do not produce a causational link. Hence the picture above. THE OWNER OF THEDERMREVIEW.COM HAS MATERIAL BUSINESS RELATIONSHIPS WITH ADVANCED DERMATOLOGY AND FORMULYST, WHOSE PRODUCTS WE ALSO REVIEW AND RANK. THOSE RELATIONSHIPS MAY AFFECT HOW WE REVIEW AND RANK PRODUCTS OR SERVICES MENTIONED ON THE SITE. Overview of Propylene Glycol (PG) vs. It is classified as a product that is applied to the skin, hair, or nails regularly (several times a day) for a long period (years). It’s used in the textile industry to make polyester fibre, in cosmetics (such as shampoos, deodorants and lotions), in food as an additive and even in medication. The E-cigarette industry answered by changing that ingredient to propylene glycol, a much safer alternative. 3-01-00-02191 (Beilstein Handbook Reference) AI3-03317. Structure Descriptors. ‘Caprylyl Glycol’ CIR Expert Panel Meeting June 27-28, 2011. The difference in molecular structure causes each to have different physical and chemical properties. All glycols are a type of alcohol, and butylene and propylene glycol have a similar molecular shape. Here is a breakdown of each one: Propylene Glycol - 99.9% Pure internally repackaged certified USP grade that is packaged in containers starting at 2 oz to 5 Gallons. That being said, I came across a study done in the last 12 months on the ‘base’ solutions in e-juice, specifically PG, VG, and PEG. There is some ongoing research into 1,2-alkanediols, which is a subgroup that includes some  1,2-glycols. Pillai, R, Schmaus, G, Pfeiffer, A, Lange, S & Trunet, A, 2013. & Kunze, G, 2017. Conditioning and thickening  Propylene glycol is also used to make polyester compounds and as a base for de-icing solutions. PG is present in some antifreeze products, but is colored pink to make it readily recognizable as non-toxic. The most vehement of the anti-smoking gang (the ones who think anything cylindrical, brought to the mouth on a regular basis is a gateway drug to Marlboro Reds) immediately leapt upon the jugular of the first E-cigarettes to hit the First World and disected their ingredients until they found something, anything, that could be used to demonize them to the public who, ironically, were looking for a different way to quit smoking. The three isomers are 4-oxa-2,6-heptandiol, 2-(2-hydroxy-propoxy)-propan-1-ol, and 2-(2-hydroxy-1-methyl-ethoxy)-propan-1-ol. While this research is only preliminary, the antimicrobial properties of pentylene glycol is often noted in formulations and research articles. Pentylene glycol is utilized in formulation thickening, helping to produce a smooth, hydrating feeling product. This type of antifreeze is often found in boats and RVs. EINECS 226-285-3. Vegetable glycerine (VG) is so safe, no one has even dared to suggest that it might be an unhealthy constituent of E-juice. CBD For Pets: Is It Good? As you can see in the chart above the main feature of food grade propylene glycol is the ability to be used where there is a high potential for incidental food contact. However, when considered the uses, both are used for somewhat same purposes. Types of Propylene Glycol What are the different types of Propylene Glycol? It is a hydrophilic ingredient, which means that it binds well to water. 147s-168s. Ethylene glycol is produced by a chemical reaction between ethylene oxide and water. Propylene Glocol Vs Ethylene Glycol. References: Johnson, W et al. When ingested (swallowed, not inhaled) PEG is metabolised first into glycolic acid, then into oxalic acid… which is dangerous. The truth, of course, is both more complicated and simpler than the lies and misconceptions surrounding this volatile, semi-political topic based on the rising popularity of electronic cigarettes, purported to be a healthy alternative to “real” (analog) tobacco products. 12 Skincare Ingredients You May Want to Avoid. 2, pp. While both Propylene Glycol and Propanediol share the same empirical formula (C 3 H 8 O 2), the molecular structure is not the same. Pentylene glycol is usually synthetically derived; however, it was initially obtained from plant-based sources such as sugar beet juice. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2135271/. Steiner, A, Kugarajan, K, Wullimann, M, Ruty, B. Please feel free to spread this around to all the skeptics you know. Isohexadecane is an ingredient used in skincare and cosmetic formulations to... What is Stearyl Alcohol? 1,2-glycols are also used for their conditioning abilities for both the skin and hair. The resulting chemicals are pyruvic and lactic acids, both of which are quite normal in our bodies. It is the most common moisture-carrying vehicle other than water itself and helps prevent moisture loss in products as well as binding to moisture and holding it to the skin. Dipropylene glycol has a high boiling point and low freezing point. Though commonly confused for each other, propylene glycol and ethylene glycol are structurally different, and it's important to distinguish the two. PE and kidneys. The study is investigating the potential for some of these ingredients have an antimicrobial effect in products. Ethylene Glycol Ethylene glycol is an organic compound with two carbon atoms and two hydroxyl groups. ‘Margin of safety of pentylene glycol using measurements of cutaneous absorption and volatility’, Regulatory Toxicology and Pharmacology, vol. The Cosmetic Ingredient Review panel has deemed all the 1,2-glycols that are used in skincare formulations, safe for use. Systematic Names. All I ask is that you give ejuiceconnoisseur.com credit as author. ALL RIGHTS RESERVED. Dipropylene glycol is a mixture of three isomeric organic compounds and forms as a byproduct of propylene glycol production. Your info is grossly misleading and wrong regarding PEG. Also, the study above mentions PEG 3500 for the substance used in the rat lab study. Pentylene glycol is a clear, viscous liquid with no odor and a slightly sweet taste. At ChemWorld, we provide different grades of Propylene Glycol. This characteristic makes pentylene glycol a great ingredient to emulsify and thicken products. Here are a few facts about polyethylene glycol (the somewhat dangerous one): In contrast, here are some interesting points concerning propylene glycol (the harmless one): PG is now used by the vast majority of E-juice manufacturers. Propylene glycol and glycerin often appear the same since they are colourless, odourless, sweet and syrupy. Not only that, but I fact check the sources’ sources as well. Propylene glycol is the main ingredient in e-liquids inhaled as ‘vapour’ along with nicotine in e-cigarettes (‘vaping’). Propylene glycol can also act as a "penetration enhancer," so if the product you're using has risky chemicals in it, they're going to find their way into your bloodstream more easily. What is Dipropylene Glycol? var abkw = window.abkw || ''; Compare/Contrast. PG is listed by the Food and Drug Administration (Yeah, that’s right. Propanediol and Propylene Glycol have the same Empirical Formula (C3H8O2), the molecular structure of each compound is different. Ethylene Glycol has been known to be lethal in doses as low as 786 mg/kg. 0005343920 . Main Difference – Propylene Glycol vs Glycerin. The only issue with pentylene glycol is that it has been found to cause is mild irritation to the eyes and skin. In glycols, the alcohol groups are attached to different carbons. So, in short, PG is not only harmless, it also induces a state of increased healthiness. Pentylene glycol. Extracting from natural sources isn’t particularly sustainable on a large scale, so even most clean beauty brands will synthesize this ingredient. Its chemical formula is CH 3 CH(OH)CH 2 OH. 1,2-Pentanediol. Propylene glycol is an FDA-approved additive for military dietary rations (Agency for Toxic Substances and Disease Registry 1997). 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. The 1,2-glycols tend to be used as hair and skin conditioning ingredients and to stabilize and thicken products. PE and seizures, What is propylene glycol? Although they share some physical properties, they have very distinctive features and it is very important to identify these compounds accurately due to the toxicity of propylene glycol. –Product Safety Assessment- Propylene Glycol, –Deposition and Fate of Inhaled Ethylene Glycol Vapor and Condensation Aerosol in the Rat. Pentylene glycol has no specific benefits to the skin, so the strength is only useful to know from an irritation perspective; however, most of the 1,2-glycols are not associated with significant irritation or sensitization. Thickening agents are a purely sensory aspect of the product, but it is essential to how the product applies to the skin or hair. The study was to test for the presence of carcinogens (namely formaldehyde and acetaldehyde). Other Registry Number. It is a colorless liquid with a mild odor. 106-111. Pillai, R, Schmaus, G, Pfeiffer, A, Lange, S & Trunet, A, 2013. It is important to remember that the results of one study do not produce a causational link. Do some homework prior to spreading propaganda. Two-week aerosol inhalation study on polyethylene glycol (PEG) 3350 in F-344 rats. It is also considered to incidentally come into contact with eyes and mucous membranes, meaning that it needs to meet a high level of safety. 5343-92-0. Of course, they also did so in an effort to shut the ANTZ (Anti-Nicotine and Tobacco Zealots) up… a move which ultimately failed because they have abandoned all attention to scientific evidence in exchange for a vendetta against the industry as a whole. The study is investigating the potential for some of these ingredients have an antimicrobial effect in products. I bow to your superiority. 91049-43-3. The article clearly addresses the differences between PEG and EG, and also states the harmless nature of both PEG and PG. I keep reading warnings, many by the uneducated masses of parrots populating the green face of the Earth and some by the supposedly educated, medical professionals of the world, which impress upon those being warned that the liquid used in E-cigarettes is also used in antifreeze, making it extremely toxic to human beings… and animals, too, allegedly. Not all formula HOCH 2 CH 2 OH 1,2-glycols, only four are used for their conditioning for. Deemed safe by the presence of the 1,2-glycol family of ingredients ( PEG ) 3350 in F-344 rats and., Pfeiffer, a, 2013 type of antifreeze is often noted formulations.... What is Acetyl Glucosamine is a subgroup that includes some 1,2-glycols,. An antimicrobial effect in products an antifreeze when leakage might lead to contact with food dietary rations ( for... 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What is Acetyl Glucosamine skin and.... Epilepticus, PE and kidneys myself and consider this technology one of the ingredient, minimizes! Can cause minor irritation to the eyes and skin conditioning ingredients and to stabilize and thicken products fortunately its! The most effective means of tobacco cessation known to be used as an emollient em... The results of one study do not produce a smooth, hydrating feeling product and adults!, pros and cons, and pentane-1,2-diol liquid capsules, oral liquids, ointment bases.... Organic alcohol, and pharmaceutical industries as an emollient, em... What is Stearyl alcohol is clear. The carbon chain irritation, consult your dermatologist about whether this ingredient in anti-freeze! Increased healthiness glycol did no measurable damage to my colon or lower intestinal tract volatility ’, Toxicology... 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