Propylene glycol (IUPAC name: propane-1,2-diol) is a synthetic organic compound with the chemical formula C3H8O2. It is a viscous, colorless liquid which is. Propylene glycol is a synthetic liquid substance that absorbs water. Propylene glycol is also used to make polyester compounds, and as a base for deicing. Propylene glycol is a substance commonly used as a food additive or ingredient in many cosmetic and hygiene products. The US and.
Food and Drug Administration as " generally recognized as safe " GRAS for use as a direct food additive , including frozen foods such as ice cream and frozen desserts. Prolonged contact with propylene glycol E is essentially non-irritating to the skin. Exposure to mists may cause eye irritation, as well as upper respiratory tract irritation. Inhalation of propylene glycol vapors appears to present no significant hazard in ordinary applications.
This concentration has been linked to use of water-based paints and water-based system cleansers. However, the study authors write that glycol ethers and not propylene glycol are the likely culprit. Propylene glycol does not cause sensitization , and it shows no evidence of being a carcinogen or of being genotoxic. Adverse responses to intravenous administration of drugs that use propylene glycol as an excipient have been seen in a number of people, particularly with large dosages.
Responses may include "hypotension, bradycardia QRS and T abnormalities on the ECG, arrhythmia , cardiac arrest, serum hyperosmolality , lactic acidosis , and haemolysis ". Individuals who cannot tolerate propylene glycol experience inflamed dry skin in the facial area, or small red dots on the body. Therefore, propylene glycol allergy is more common in those countries.
Propylene glycol is known to exert high levels of biochemical oxygen demand BOD during degradation in surface waters. This process can adversely affect aquatic life by consuming oxygen needed by aquatic organisms for survival. Large quantities of dissolved oxygen DO in the water column are consumed when microbial populations decompose propylene glycol. Sufficient dissolved oxygen levels in surface waters are critical for the survival of fish, macroinvertebrates, and other aquatic organisms.
If oxygen concentrations drop below a minimum level, organisms emigrate, if able and possible, to areas with higher oxygen levels or eventually die. This effect can drastically reduce the amount of usable aquatic habitat.
From Wikipedia, the free encyclopedia. Not to be confused with polypropylene glycol or ethylene glycol. An Encyclopedia of Chemicals, Drugs, and Biologicals.
Retrieved 3 October Contact, Atopic, Occupational, Drug. Check date values in: Agency for Toxic Substances and Disease Registry. Major Oxygenated, Chlorinated and Nitrated Derivatives. John Wiley and Sons, Inc. Total Synthesis of Natural Products: Retrieved Sep 22, After discontinuing the drug that poisoned her body, her condition stabilized for a period of time, but she later died after her condition deteriorated again.
Perhaps the most concerning part of constant propylene glycol exposure is the way that it may provide other chemicals a free pass into your bloodstream. So, although propylene glycol may not be as terrifying as some people claim, it does have enough red flags to cause me to recommend avoiding it. In order to protect your general health, hormone balance and overall chemical exposure, there are a few ways to avoid propylene glycol when possible.
Make use of it! A great number of cosmetics include propylene glycol, but in the U. Lotions and baby wipes also make the list of products that commonly contain this chemical.
Other common personal care items on that list might include: Most natural alternatives to propylene glycol involve choosing foods and cosmetics free of the substance. However, feel free to use some of the recipes on my website to create homemade salad dressings and guilt-free and chemical-free desserts. You can also use raw butter instead of margarine for an immediate health booster to your cooking. Because household cleaners often contain propylene glycol, I encourage you to try my Homemade House Cleaner recipe.
As electronic cigarettes also contain large amounts of propylene glycol, e-cigarette users may also try the alternative of vegetable glycerin e-cigarettes, the organic alternative — though I recommend quitting smoking entirely, of course. From the sound of it, you might think leaky gut only affects the digestive system, but in reality it can affect more. Click here to learn more about the webinar. Josh Axe is on a mission to provide you and your family with the highest quality nutrition tips and healthy recipes in the world Try My 6-Step Liver Cleanse.
Axe on Facebook 51 Dr. Axe on Twitter 1 Dr. Axe on Instagram Dr. Axe on Google Plus Dr. Axe on Youtube Dr. Axe on Facebook 10 Dr. I think for those of us with curly hair, propylene glycol's main benefit is the fact that it is a humectant, and a pretty effective one at that.
The application of propylene glycol that is most relevant to those of us with curly hair is as a humectant. All the usual cautions apply with regard to its capabilities to attract water to the hair from the environment or to draw water from the hair to itself.
Unless you have the perfect atmospheric conditions, you may experience problems with this ingredient. Propylene glycol is a completely water-soluble material that will not build up on the hair. It is also important to note that it is a diol with low volatility, meaning it will not evaporate easily and cause dry hair in the manner of low molecular weight alcohols such as SD alcohol and isopropyl alcohol. Propylene glycol should not be a feared ingredient.
If product manufacturers are finding replacement ingredients to fulfill the same purposes in their formulas served by propylene glycol, I see no harm in that. However, I hesitate to support marketing materials that use this as a selling point. As a curly, it would be wise to be aware if you are using products that contain this ingredient, just in case you observe increased frizz or dryness. Use plenty of moisturizing products to help lock moisture into your hair shaft, which can help prevent any potential problems caused by a humectant.
Since the original publication of this article discussing the use of propylene glycol in personal hair products and food, the popularity of e-cigarettes has brought increased attention to this ingredient. Propylene glycol is used as one of the three main ingredients in e-cigarettes, along with nicotine and flavoring. In April , the New York Times reported on the presence of formaldehyde in e-cigarettes, "E-cigs often use propylene glycol or glycerol to help transport nicotine and flavors and to create the big vapor cloud.
Writer Tonya McKay Becker is a curly-haired polymer scientist and cosmetic chemist whose academic and industrial research experience have provided her with expertise in the fundamentals and applications of polymer science and colloid chemistry. Like what you see?
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Propylene Glycol is a propanediol that exists as a clear, colorless and hygroscopic liquid and consists of propane where the hydrogens at positions 1 and 2 are. Recently, the ingredient propylene glycol has been in the news. We first learned about this ingredient from Sean O'Keefe, PhD, a food science. What is propylene glycol? Propylene glycol is a common ingredient found in many products we use in our daily life. Propylene glycol and other.