{"product_id":"50-propylene-glycol-technical-grade","title":"50% Propylene Glycol Technical Grade","description":"\u003ch2\u003eWhy 50% Propylene Glycol Technical Grade\u003c\/h2\u003e\n\u003cp\u003e50% Propylene Glycol Technical Grade provides immediate, ready-to-pump freeze protection down to approximately -28°F (-33°C) and freeze and burst protection (-51°C) without the operational delays of on-site dilution. As an uninhibited heat transfer fluid, it serves as a low-toxicity alternative to toxic ethylene glycol for industrial systems that lack food-grade requirements and do not need pre-blended corrosion inhibitors. Choosing this strictly controlled, pre-mixed concentration ensures a reliable balance of thermal conductivity and pumpability across varying temperature extremes. Furthermore, utilizing a factory-blended 50\/50 ratio completely eliminates the risk of mineral scaling and system fouling that frequently occurs when diluting 100% glycol with untreated facility water. By standardizing on this specific concentration, facility engineers lock in a known viscosity curve that prevents the over-working of circulation pumps during deep winter freezes.\u003c\/p\u003e\n\n\u003ch3\u003eBest Applications for This Grade\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommonly applied in industrial HVAC chillers and secondary cooling loops where a low-toxicity chemical profile is mandated by safety protocols, but heavy-duty corrosion inhibitor packages are either maintained by a separate chemical feed system or deemed unnecessary for the specific piping metallurgy.\u003c\/li\u003e\n\u003cli\u003eCommonly applied in large-scale facility winterization protocols to protect exposed pipes, floor drains, and commercial plumbing lines from catastrophic bursting during severe ambient temperature drops.\u003c\/li\u003e\n\u003cli\u003eCommonly applied in ground-source heat pumps and geothermal field loops where local environmental regulations strictly prohibit toxic fluids and require a low-toxicity alternative to mitigate the impact of an accidental release into the soil.\u003c\/li\u003e\n\u003cli\u003eCommonly applied in heavy-duty equipment testing facilities and specialized industrial heat exchangers that demand a stable, predictable thermal transfer rate without the interference of active inhibitor chemistry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen to Choose a Different Grade\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIf your closed-loop architecture contains mixed metals (such as copper, brass, and steel) and requires built-in chemical protection to actively arrest rust, cavitation, and system scaling, choose 50% Propylene Glycol Inhibited.\u003c\/li\u003e\n\u003cli\u003eIf your manufacturing facility processes consumable goods, beverages, or pharmaceuticals and requires stringent purity standards to legally permit potential incidental contact, choose Propylene Glycol 50% – USP Grade (C3H8O2).\u003c\/li\u003e\n\u003cli\u003eIf your local climate or specific operating parameters demand a lighter freeze protection curve—such as a 30% or 40% blend to maximize heat transfer efficiency over extreme freeze protection—and you possess the equipment to blend properly with deionized water, choose a 100% uninhibited technical grade propylene glycol.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Alliance Chemical","offers":[{"title":"1 Quart \/ 1 Quart","offer_id":42585589579818,"sku":"Y7L-K8M-P3T","price":20.94,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 2 Quarts","offer_id":42585589612586,"sku":"X9W-Q4G-M6T","price":30.02,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 4 Quarts","offer_id":42585589645354,"sku":"P8L-Y2X-K7M","price":44.11,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 8 Quarts","offer_id":42585589678122,"sku":"M3T-K9W-Q6G","price":67.61,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 1 Gallon","offer_id":42585589710890,"sku":"Y4L-P7X-K2M","price":44.11,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 2 Gallons","offer_id":42585589743658,"sku":"X8T-Q9W-M6G","price":67.61,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 4 Gallon Case","offer_id":42585589776426,"sku":"P7L-K3M-Y2T","price":127.93,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 4 Gallons x 36 Cases","offer_id":42585589809194,"sku":"M9T-Q4W-X6G","price":3697.86,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 5 Gallon Pail","offer_id":42585589841962,"sku":"Y8L-K2X-P7M","price":158.31,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 4 x 5 Gallon Pails","offer_id":42585589874730,"sku":"G3T-Q9W-M6Y","price":582.59,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 36 x 5 Gallons (Pallet)","offer_id":42585589907498,"sku":"P4L-K7M-Y8T","price":4345.0,"currency_code":"USD","in_stock":true},{"title":"15 Gallon \/ 15 Gallon Drum","offer_id":42585589940266,"sku":"M2T-Q6W-X9G","price":440.18,"currency_code":"USD","in_stock":true},{"title":"55 Gallon \/ 55 Gallon Drum","offer_id":42585589973034,"sku":"Y7L-K8X-P3M","price":1426.65,"currency_code":"USD","in_stock":true},{"title":"55 Gallon \/ 4 x 55 Gallon Drums","offer_id":42585590005802,"sku":"X9T-Q4W-M6G","price":4345.0,"currency_code":"USD","in_stock":true},{"title":"275 Gallon \/ 275 Gallon IBC Tote","offer_id":42585590038570,"sku":"P8L-K2M-Y7T","price":4345.0,"currency_code":"USD","in_stock":true},{"title":"330 Gallon \/ 330 Gallon IBC Tote","offer_id":43829844574250,"sku":"XDR-J6F-MXV","price":4796.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/2734\/1866\/files\/propylene-glycol-tech-50--330--gallon.jpg?v=1764176471","url":"https:\/\/alliance-chemical-store.myshopify.com\/products\/50-propylene-glycol-technical-grade","provider":"Alliance Chemical","version":"1.0","type":"link"}