{"product_id":"propylene-glycol-usp-grade","title":"Propylene Glycol USP Grade","description":"\u003ch2\u003eWhy Propylene Glycol USP Grade\u003c\/h2\u003e\n\u003cp\u003ePropylene Glycol USP Grade at 100% concentration provides an uninhibited, entirely non-toxic heat transfer fluid and chemical intermediate engineered for operations requiring absolute safety compliance. Because this formulation arrives at full strength with zero added water or corrosion inhibitors, facility engineers can custom-dilute the transparent, colorless liquid to achieve the exact freeze protection curve required for their local climate zone. Diluting this 100% base allows operators to maximize specific heat capacity, as pure glycol transfers heat less efficiently than a balanced glycol-water mixture. For industries evaluating heat transfer options, this product delivers the critical food-safe advantage over highly toxic ethylene glycol, ensuring operational continuity in environments where incidental contact with consumables is a risk. With a flash point of 104°C (219.2°F) and high water solubility, it integrates readily into existing aqueous systems while remaining non-flammable under ambient conditions.\u003c\/p\u003e\n\n\u003ch3\u003eQuick Specs\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;margin:0 0 1.25rem 0;font-size:0.95rem;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#555;\"\u003eCAS Number\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;\"\u003e\u003cstrong\u003e57-55-6\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#555;\"\u003eChemical Formula\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;\"\u003e\n\u003cstrong\u003eC\u003csub\u003e3\u003c\/sub\u003eH\u003csub\u003e8\u003c\/sub\u003eO\u003csub\u003e2\u003c\/sub\u003e\u003c\/strong\u003e (propane-1,2-diol)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#555;\"\u003eMolecular Weight\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;\"\u003e\u003cstrong\u003e76.09 g\/mol\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#555;\"\u003eGrade \/ Concentration\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;\"\u003e\u003cstrong\u003eUSP-NF \/ 99.9 wt% typical\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#555;\"\u003eBoiling Point\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;\"\u003e188.2°C (370.4°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#555;\"\u003eMelting Point\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;\"\u003e-59°C (-74.2°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#555;\"\u003eFlash Point\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;\"\u003e104°C (219.2°F), closed cup\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#555;\"\u003eSpecific Gravity\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;\"\u003e1.033–1.039 (20°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#555;\"\u003eWater Content\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;\"\u003e\u0026lt;0.5% (typical 0.1%)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#555;\"\u003eDOT Hazard Class\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;\"\u003eNot Regulated\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplication Deep-Dives\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDatacenter liquid cooling loops:\u003c\/strong\u003e Pure 100% PG USP is the engineering choice for rear-door heat exchanger and direct-liquid-cooling rigs where operators dial in their own glycol:water ratio (typically 25–40% by volume) to balance freeze protection against pump head and heat capacity. Uninhibited base lets thermal teams pair their own oxidation\/corrosion package to the cooling-loop metallurgy.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePharmaceutical solvent \u0026amp; tablet excipient:\u003c\/strong\u003e Meets the USP-NF monograph for direct use in oral, topical, and parenteral formulations. Functions as a humectant, plasticizer, and water-miscible solvent for active pharmaceutical ingredients that resist pure aqueous solubilization.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFood \u0026amp; beverage processing humectant:\u003c\/strong\u003e GRAS-listed (21 CFR 184.1666). Used in dough conditioners, frozen dairy mix, dressings, and flavor carriers where moisture retention and freeze-thaw stability matter. Food-safe profile permits use in chillers serving food-contact equipment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHPLC mobile-phase modifier:\u003c\/strong\u003e 99.9 wt% purity with low water content makes USP Grade PG suitable as a viscosity modifier and selectivity tuner in reversed-phase separations. Its low UV cutoff and lack of inhibitor additives keeps detector baselines clean.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCosmetic \u0026amp; personal-care formulation:\u003c\/strong\u003e Standard humectant in lotions, serums, deodorants, and color cosmetics. Functions as a coupling agent for fragrance compounds and a freeze-point depressant in water-based formulations shipped through cold-chain logistics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUSP Compliance \u0026amp; Hazard Profile\u003c\/h3\u003e\n\u003cp\u003eEvery lot ships against the current United States Pharmacopeia (USP-NF) monograph for Propylene Glycol with typical assay 99.9 wt%, water content ≤0.5%, and confirmation against identification A and B tests. A Certificate of Analysis is available on request via our COA portal. Propylene Glycol is GRAS-affirmed by FDA (21 CFR 184.1666) for direct food use and listed in the FDA Inactive Ingredient Database for pharmaceutical formulation. The material is \u003cstrong\u003enot regulated under DOT 49 CFR\u003c\/strong\u003e; no UN number, no hazard class, no shipping placard required. Standard PPE for industrial handling includes nitrile or neoprene gloves, splash goggles, and a long-sleeve lab coat; full SDS is linked from this PDP.\u003c\/p\u003e\n\n\u003ch3\u003eSpill, Storage \u0026amp; Disposal\u003c\/h3\u003e\n\u003cp\u003ePropylene Glycol is fully water-miscible and biodegradable (typical BOD\u003csub\u003e5\u003c\/sub\u003e 0.85 g\/g; readily biodegradable per OECD 301). Small spills can be absorbed with vermiculite, sand, or commercial spill pads and disposed per local non-hazardous waste regulations; large industrial spills should be diked and recovered into compatible containers, then routed through a permitted aqueous-waste treatment line. Store between 5–30°C in tightly closed HDPE, polypropylene, stainless steel, or unlined carbon steel containers away from strong oxidizers (perchlorates, peroxides, concentrated nitric acid). Shelf life is 24 months from manufacture date in unopened original packaging.\u003c\/p\u003e\n\n\u003ch3\u003ePackaging, Lead Times \u0026amp; Bulk Pricing\u003c\/h3\u003e\n\u003cp\u003ePropylene Glycol USP Grade ships from our Taylor, Texas warehouse in containers sized for every operation:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLab \u0026amp; bench:\u003c\/strong\u003e 1 quart, 2-quart case, 1 gallon, 4×1 gallon case\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduction:\u003c\/strong\u003e 5 gallon poly pail, 5 gallon carboy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBulk:\u003c\/strong\u003e 55 gallon HDPE drum, 4×55 gallon drum pallet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTote:\u003c\/strong\u003e 275 gallon IBC, 330 gallon IBC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eStandard ground orders ship within 1–2 business days. Drum and IBC orders are shipped via LTL freight; freight quotes are issued within 1 business day of order placement. For pallet-, truckload-, or contract-volume requests, contact our team at \u003ca href=\"mailto:sales@alliancechemical.com\"\u003esales@alliancechemical.com\u003c\/a\u003e or request a quote directly from the variant selector above.\u003c\/p\u003e\n\n\u003ch3\u003eWhen to Choose a Different Grade\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIf your facility requires a pre-mixed, food-safe solution ready for immediate deployment in mild climates without the labor and water-quality variables of on-site dilution, choose \u003ca href=\"\/products\/propylene-glycol-usp-30-percent\"\u003e30% Propylene Glycol USP Grade\u003c\/a\u003e.\u003c\/li\u003e\n  \u003cli\u003eIf you are managing industrial closed-loop HVAC systems or heavy-duty chillers with no risk of food contact, operations dictate an \u003ca href=\"\/products\/inhibited-propylene-glycol-30-percent\"\u003einhibited propylene glycol blend\u003c\/a\u003e with aggressive corrosion protection for internal copper, steel, and brass piping.\u003c\/li\u003e\n  \u003cli\u003eIf your facility operates in extreme freeze-prone regions and requires immediate top-off fluid, selecting a pre-diluted 40% or 50% concentration ensures stable freeze point depression without the risk of an improper on-site mixture ratio freezing and bursting system lines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy Propylene Glycol USP from Alliance Chemical\u003c\/h3\u003e\n\u003cp\u003eAlliance Chemical is a \u003cstrong\u003eHistorically Underutilized Business Zone (HUBZone) certified small business\u003c\/strong\u003e and an \u003cstrong\u003eHWOSB (Historically Underutilized Women-Owned Small Business)\u003c\/strong\u003e supplier under the Department of Defense Small Business program. Our DLA Approved CAGE Code is \u003cstrong\u003e1LT50\u003c\/strong\u003e; DUNS \u003cstrong\u003e012941063\u003c\/strong\u003e; UEI \u003cstrong\u003eGW25FCLNJ5E7\u003c\/strong\u003e. We were awarded the \u003cstrong\u003eDoD Bronze Medal Supplier of Excellence\u003c\/strong\u003e for sustained delivery and quality performance to federal and federally-adjacent customers. Founded in 1998 and shipping from 204 S Edmond St, Taylor, Texas, we maintain an A+ Better Business Bureau rating and supply USP-grade propylene glycol to pharmaceutical contract manufacturers, federal labs, datacenter operators, and the personal-care industry across all 50 states.\u003c\/p\u003e\n\u003c!-- PDP_ARTICLE_LINKS_START --\u003e\n\u003cdiv class=\"pdp-article-links\" style=\"margin-top:2rem;padding:1.5rem;border-top:1px solid #e5e5e5;\"\u003e\n  \u003ch3 style=\"margin:0 0 1rem 0;font-size:1.25rem;\"\u003eLearn more about Propylene Glycol USP Grade\u003c\/h3\u003e\n  \u003cul style=\"list-style:disc;padding-left:1.5rem;margin:0;\"\u003e\n    \u003cli\u003e\u003ca href=\"\/blogs\/articles\/brewing-a-spooky-atmosphere-the-role-of-propylene-glycol-and-glycerin-in-fog-generation\"\u003eBrewing a Spooky Atmosphere: The DIY Recipe for a Spectral Fog Solution Using Propylene Glycol, Glycerin and Deionized Water\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/blogs\/articles\/the-essential-guide-to-propylene-glycol-in-food-beverage-manufacturing\"\u003eThe Essential Guide to Propylene Glycol in Food \u0026amp; Beverage Manufacturing\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/blogs\/articles\/propylene-glycol-di-water-in-thermal-systems-the-practical-guide\"\u003ePropylene Glycol + DI Water in Thermal Systems: The Practical Guide\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/blogs\/articles\/an-introduction-to-propylene-glycol-properties-and-applications\"\u003eAn Introduction to Propylene Glycol: Properties and Applications\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- PDP_ARTICLE_LINKS_END --\u003e","brand":"Alliance Chemical","offers":[{"title":"1 Quart \/ 1 Quart","offer_id":41291557306410,"sku":"F2N-3WG-98L","price":26.45,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 2 Quarts","offer_id":41291571068970,"sku":"MXJ-H8P-76T","price":48.08,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 4 Quarts","offer_id":41374790615082,"sku":"30F-FU3-T54","price":90.58,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 8 Quarts","offer_id":41374790647850,"sku":"6E4-AE0-9MS","price":171.45,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 1 Gallon","offer_id":41291571101738,"sku":"51-PTZ9-9JSG","price":77.56,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 2 Gallons","offer_id":41374790680618,"sku":"2W2-FGE-Q85","price":147.81,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 4 Gallon Case","offer_id":41291571134506,"sku":"K2-KUON-5JWP","price":275.84,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 4 Gallons x 36 Cases","offer_id":41891046064170,"sku":"YPP-ES8-EB4","price":8550.27,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 5 Gallon Pail","offer_id":41291571200042,"sku":"XW-16JK-LZHG","price":324.34,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 4 x 5 Gallon Pails","offer_id":41374790713386,"sku":"VD4-ZHE-GWV","price":1247.4,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 36 x 5 Gallons (Pallet)","offer_id":41884776464426,"sku":"10P-1MH-8UY","price":10211.46,"currency_code":"USD","in_stock":true},{"title":"15 Gallon \/ 15 Gallon Drum","offer_id":41291571298346,"sku":"6N-LA9F-WYZ7","price":845.17,"currency_code":"USD","in_stock":true},{"title":"55 Gallon \/ 55 Gallon Drum","offer_id":41291571363882,"sku":"W2-YYE5-XFZF","price":2900.0,"currency_code":"USD","in_stock":true},{"title":"55 Gallon \/ 4 x 55 Gallon Drums","offer_id":41291571396650,"sku":"43A-3UP-8FL","price":10700.0,"currency_code":"USD","in_stock":true},{"title":"275 Gallon \/ 275 Gallon IBC Tote","offer_id":41884776497194,"sku":"T3-HLDS-84SG","price":12500.0,"currency_code":"USD","in_stock":true},{"title":"330 Gallon \/ 330 Gallon IBC Tote","offer_id":43829839626282,"sku":"0E6-TNAA-F1RR","price":14600.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/2734\/1866\/files\/propylene-glycol-usp-quart-1-1_1eaa74d9-06eb-4f0a-946d-5827079ac93a.jpg?v=1748983672","url":"https:\/\/alliance-chemical-store.myshopify.com\/products\/propylene-glycol-usp-grade","provider":"Alliance Chemical","version":"1.0","type":"link"}