--- title: When is Food-Grade Propylene Glycol Required? description: There is food-grade and industrial-grade propylene glycol. Understand the differences and when you should be using which one. image: https://info.kellerheartt.com/hubfs/images/blog/food-grade-manufacturing.jpg --- [![keller-heartt-oil](https://info.kellerheartt.com/hubfs/branding/keller-heartt-logo.200.png)](https://www.kellerheartt.com/) - Shop By Industry - [Trucking & Automotive](https://www.kellerheartt.com/collections/commercial-truck-supplies) - [Diesel Exhaust Fluid](https://www.kellerheartt.com/collections/diesel-exhaust-fluid) - [Motor Oil](https://www.kellerheartt.com/collections/motor-oil) - [Brake Cleaner](https://www.kellerheartt.com/collections/brake-cleaner) - [Antifreeze](https://www.kellerheartt.com/collections/antifreeze-coolants) - [Transmission Fluid](https://www.kellerheartt.com/collections/transmission-fluid) - [Machine Shops & Metalworking](https://www.kellerheartt.com/collections/metalworking-fluids) - [Cutting Oil](https://www.kellerheartt.com/collections/cutting-oil) - [Coolant](https://www.kellerheartt.com/collections/tool-die-coolants) - [Hydraulic Oil](https://www.kellerheartt.com/collections/hydraulic-oil) - [Soluble Oil](https://www.kellerheartt.com/collections/soluble-oil) - [Rust Preventative](https://www.kellerheartt.com/collections/tool-die-rust-veto) - [Industrial](https://www.kellerheartt.com/collections/industrial-products) - [Hydraulic Oil](https://www.kellerheartt.com/collections/hydraulic-oil) - [Industrial Gear Oil](https://www.kellerheartt.com/collections/industrial-gear-oil-all-sizes-brands) - [Multi-Purpose Grease](https://www.kellerheartt.com/collections/multi-purpose-grease) - [Cleaner & Degreaser](https://www.kellerheartt.com/collections/industrial-cleaners-descalers-degreasers) - [Ethylene Glycol](https://www.kellerheartt.com/collections/ethylene-glycol) - [Food & Beverage](https://www.kellerheartt.com/collections/food-grade-oils-lubricants) - [Propylene Glycol](https://www.kellerheartt.com/collections/propylene-glycol-drums) - [Cassida Fluid & Grease](https://www.kellerheartt.com/collections/cassida-lubricants-greases) - [Fuchs Gear Oil & Grease](https://www.kellerheartt.com/collections/fuchs-lubricants) - Shop By Brand - [Shell Products](https://www.kellerheartt.com/collections/shell-oil-lubricants) - [TRUEGARD Products](https://www.kellerheartt.com/collections/truegard-oil-lubricants) - [Blue DEF Products](https://www.kellerheartt.com/collections/bluedef) - [Oil Eater Products](https://www.kellerheartt.com/collections/oil-eater) - [Blog](https://info.kellerheartt.com/blogs) - [Request a Quote](https://www.kellerheartt.com/pages/request-a-quote) [Contact Us](https://www.kellerheartt.com/pages/contact-us) Propylene Glycol # When is Food-Grade Propylene Glycol Required? [Brian McGrath](https://info.kellerheartt.com/blogs/author/brian-mcgrath) Jan 15, 2024 --- [Propylene glycol](https://www.kellerheartt.com/collections/propylene-glycol-drums), a versatile and widely used chemical, serves various purposes across different industries. It comes in two primary grades: [food-grade](https://info.kellerheartt.com/blogs/top-four-questions-about-food-grade-glycol) and industrial-grade. In this blog post, we'll delve into the distinctions between these grades, emphasizing that the requirement for food-grade propylene glycol does not necessarily imply its intended ingestion. We'll explore the diverse applications of food-grade propylene glycol, extending beyond the realm of food consumption. ## Understanding the Basics Food-grade propylene glycol undergoes rigorous testing to ensure its purity and safety. This testing is conducted to meet the strict standards set by regulatory bodies such as the [Food and Drug Administration (FDA).](https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=184.1666) The emphasis on purity is crucial, especially when the substance is intended for applications involving [direct or indirect contact with food](https://info.kellerheartt.com/blogs/using-propylene-glycol-coolant-brewing) or human-grade products. On the other hand, [industrial-grade propylene glycol,](https://info.kellerheartt.com/blogs/filling-mechanical-cooling-systems-with-propylene-glycol) while serving important purposes in various non-food applications, is generally less pure than its food-grade counterpart. It is specifically designed for industrial applications such as antifreeze, de-icing solutions, and various manufacturing processes. It may contain impurities that are not permissible in contexts where the substance comes into contact with food. ## Diverse Applications of Food-Grade Propylene Glycol While both variants share the same foundational chemical structure, their divergent paths lead to vastly different applications. Food-grade propylene glycol is used extensively in [beer brewing](https://info.kellerheartt.com/guide-to-propylene-glycol-for-beer-brewing), winemaking, and creating cold treats like ice cream. However, it is also used in more industries than you may expect, playing a pivotal role in pharmaceutical formulations, beauty products, pet care items, e-liquids for vapes, and even within the hallowed chambers of cigar storage units. ### Pharmaceuticals In pharmaceuticals, food-grade propylene glycol serves as a versatile solvent and stabilizing agent. Its hygroscopic nature allows it to absorb and retain water, making it an effective component in certain medications. By ensuring a stable and consistent environment for active pharmaceutical ingredients, propylene glycol contributes to the reliability and efficacy of medications. ### Beauty Products Within the cosmetic and personal care industry, food-grade propylene glycol acts as a humectant, attracting and retaining moisture. This makes it a valuable ingredient in products such as lotions, creams, and serums. Its ability to maintain hydration in skincare formulations contributes to the smooth texture and enhanced moisturizing properties of these beauty products. ### Pet Foods and Vet Products Food-grade propylene glycol is utilized in pet foods and veterinary products for its ability to preserve moisture and improve texture. Additionally, it can serve as a carrier for certain flavors and nutrients, enhancing the palatability of pet foods. Its safe and non-toxic properties make it suitable for inclusion in products designed for the well-being of animals. ### E-Liquids for Vapes In the realm of vaping, food-grade propylene glycol acts as a base for e-liquids. Its low viscosity and ability to produce vapor make it an ideal component in vape formulations. Propylene glycol also contributes to the even distribution of flavors and nicotine.  ### Humidors Within cigar humidors, food-grade propylene glycol is employed in the form of a solution to regulate humidity levels. Humidors use a propylene glycol-based solution to maintain a specific level of moisture in the air, preventing cigars from drying out or becoming overly moist. The controlled humidity ensures that cigars retain their flavor, aroma, and quality over time. ## Food-Grade Doesn't Always Mean Ingestible While the term "food-grade" suggests suitability for ingestion, it primarily indicates a higher level of purity and safety. Many products intended for human or animal use, whether ingested or not, require food-grade quality to ensure safety and regulatory compliance.  [![PG-Chart-CTA\_Slim](https://no-cache.hubspot.com/cta/default/23289434/interactive-223061299512.png)](https://info.kellerheartt.com/hs/cta/wi/redirect?encryptedPayload=AVxigLJAQv6AinD%2FfRdAgO%2F4vloXriaHtT3LnGCjxN427344jVqfVIp4zO4YL4JVDq4HWDALl%2BKTyizRIp2EjIHifgwmIFzqpy2J91clgixfmNqsObtl9N3aUMHP2o0XdATgabmnywmUGSrZTlXM%2Bd057pSvlyMQUxTui1uzz1zsu3DPBD11%2F3nULwqrZFJ34joU%2BFs5PAs2GRh3RR%2F8GMt6KZrgKamtFlpYd7XdZPfRAw%2BQK8HEMvink8i4SVs%2FuzA%3D&webInteractiveContentId=223061299512&portalId=23289434) [Propylene Glycol](https://info.kellerheartt.com/blogs/tag/propylene-glycol) #### FOLLOW AND SHARE: [![share on facebook](https://info.kellerheartt.com/hs-fs/hubfs/images/social/icons/facebook-color.png?width=45&height=45&name=facebook-color.png)](https://www.facebook.com/pages/Keller-Heartt-Company/170082969671892?ref=hl) [![follow us on youtube](https://info.kellerheartt.com/hs-fs/hubfs/images/social/icons/youtube-color.png?width=45&height=45&name=youtube-color.png)](https://www.youtube.com/channel/UCA9e_Yo_qd4PqpK2dDdgxaw) [![follow us on instagram](https://info.kellerheartt.com/hs-fs/hubfs/images/social/icons/instagram-color.png?width=45&height=45&name=instagram-color.png)](https://www.instagram.com/keller.heartt/?hl=en) [![follow us on twitter](https://info.kellerheartt.com/hs-fs/hubfs/images/social/icons/twitter-color.png?width=45&height=45&name=twitter-color.png)](https://twitter.com/KellerHeartt) [![follow us on linkedin](https://info.kellerheartt.com/hs-fs/hubfs/images/social/icons/linkedin-color.png?width=45&height=45&name=linkedin-color.png)](https://www.linkedin.com/company/keller-heartt-oil/) [Shop by Brand ►](https://www.kellerheartt.com/collections/shop-by-brand) ## Similar posts Propylene Glycol ### [Top Four Questions About Food-Grade Glycol Answered](https://info.kellerheartt.com/blogs/top-four-questions-about-food-grade-glycol) Learn about food-grade glycol, what it is, and how to properly dispose of it. Brian McGrath May 12, 2023 Propylene Glycol ### [Food-Grade Lubricants: Ensuring Safety in the Consumer Goods Industry](https://info.kellerheartt.com/blogs/guide-to-food-grade-lubricants) Learn about food-grade lubricants and the required certifications for consumer use. Brian McGrath May 10, 2024 Propylene Glycol ### [The Versatile Applications of Propylene Glycol in Food & Beverage Operations](https://info.kellerheartt.com/blogs/propylene-glycol-in-food) How food-grade propylene glycol keeps our favorite foods fresh, tasty, and safe—plus why it’s the behind-the-scenes hero in food and beverage... Brian McGrath Jul 29, 2025 ## **Get the latest oil & lubricant industry insights** Subscribe to the Keller-Heartt blog so you can sharpen your industry knowledge, gather helpful tips, and stay informed about changes or updates in the oil provider landscape. ### Subscribe to Our Blog! © 2025 Keller-Heart Oil All rights reserved ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Brian McGrath", "url" : "https://info.kellerheartt.com/blogs/author/brian-mcgrath" }, "dateModified" : "2026-09-28T19:50:17.886Z", "datePublished" : "2024-01-15T17:03:04.000Z", "headline" : "When is Food-Grade Propylene Glycol Required?", "image" : [ "https://info.kellerheartt.com/hubfs/images/blog/food-grade-manufacturing.jpg" ], "mainEntityOfPage" : { "@id" : "https://info.kellerheartt.com/blogs/when-is-food-grade-propylene-glycol-required", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://info.kellerheartt.com/hubfs/branding/keller-heartt-logo.350.png" }, "name" : "Keller-Heartt Co" } } ```