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Susterra® for low-temperature, food-safe fluid applications

    The natural choice in glycols

    Susterra® USP-FG propanediol utilized for food and beverage heat transfer fluid applications offers a higher-performing alternative to propylene glycol for use as the primary ingredient in heat-transfer fluid for companies that require non-toxic, food-safe properties.


    The low-viscosity profile of Susterra® USP-FG propanediol reduces pump power consumption and enhances flow rates and pumping efficiencies, which can reduce energy demands and maintenance costs. Plus, every drop of our pure, bio-based glycol is renewably sourced from plant materials, not petroleum.


    Now there is choice.

    The performance benefits of Susterra® USP-FG propanediol include:

    • Improved viscosity at lower temperatures compared to propylene glycol, driving process cooling efficiency
    • Excellent freeze-point depression for aqueous solution applications
    • 100% USDA bio-based material, renewably and sustainably sourced
    • Safe, low-toxic, and readily biodegradable
    • Approved for incidental food contact under the NSF International HTX-1 specification
    • GRAS, Halal, Kosher
    • Meets specifications set forth in the United States Pharmacopeia-Food Chemical Codex monograph associated with biobased 1,3-propanediol
    • Contributes to LEED points

    Susterra® is effective in many low-temperature heat-transfer fluid applications, including:

    • Food and beverage process cooling
    • Immersion freezing
    • Cooling liquid foods and dairy products
    • Fermentation and maturation cooling
    • Carbonated beverage cooling
    • Plastic bottle blow-molding cooling
    • Ice systems
    • Data center and server room cooling
    • Single-fluid process cooling
    • Closed-loop, water-based HVAC applications

    Contact Us

    Contact a Susterra® propanediol distributor in your area, Request a Sample here on on SpecialChem

    Need a Susterra® PDO based corrosive inhibitor or bacterial inhibitor package? Check out our providers here: Functional Fluids

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    Primient Covation LLC

    198 Blair Bend Drive • Loudon, TN 37774

    +1-866-404-7933

    Copyright © 2025 Primient Covation LLC • Zemea® and Susterra® are registered trademarks of Primient Covation LLC. - All Rights Reserved. 

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