Functional fluids
Keeping a variety of industries moving without relying on petroleum
Effective heat transfer is crucial for both low-temperature and high-temperature applications. That’s why companies choose Susterra® propanediol, the higher-performing, 100% plant-based glycol, as the primary ingredient in their heat-transfer fluids.
Susterra® propanediol has exactly the same chemical formula as propylene glycol but a slightly different structure due to the fermentation process used to produce it. This slight structural modification gives it enhanced thermal stability and a longer life in high-heat applications such as solar and geothermal process heating.
Also, Susterra® propanediol offers lower viscosity at low temperatures compared to propylene glycol, which can improve energy and pumping efficiencies in cooling applications and reduce maintenance costs.
The benefits of Susterra® propanediol include:
- Lower viscosity at lower temperatures compared with propylene glycol—for greater process cooling efficiency and reduced energy consumption
- Excellent freeze-point depression for aqueous solution applications
- Demonstrates less thermal degradation than propylene glycol and ethylene glycol in high temperature applications
- Higher boiling point than propylene glycol and ethylene glycol
- USDA BioPreferred® certified as 100% bio-based and is 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
- LEED points eligible
Susterra® propanediol is effective in the following low-temperature heat-transfer fluid applications:
Low-Temperature, Food Safe Fluids:
Breweries & Spirits, Packaged Foods, Food Safe Fluids
High- Temperature:
Engine Coolants
Other:
Geothermal Systems, Deicing, & More
Where to buy
Find a distributor in your area.
Request a sample
Product formulators and designers are invited to request a sample for application testing.