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Susterra 1,3 PropanediolFor Brewery Heat Transfer FluidsSusterra 1,3 Propanediol offers system owners an innovative, bio based glycol alternative for glycol loops

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Glycol Viscosity ComparisonSusterra 1,3 Propanediol exhibits lower viscosity in low-temperature conditions like those in brewery heat transfer loops, improving efficiency of the system.#Comparison of Pumping Pressure: Susterra 1,3 PDO vs PGAt -10 C, a 40% PG /60% water solution requires 2.4 times the pumping energy as a 40% Susterra/ 60% water solution.

40.5 wt % PG 40 wt % PDO Properties at -10 C#Freeze Points of Aqueous Glycol Solutions

Susterra 1,3 Propanediol lowers freeze points in applications like brewery heat transfer loops.#6Glycol Cracking Study ResultsGlycol cracking occurs as heat transfer fluid sees temperature fluctuations, producing corrosive organic compounds and darkened fluid. This often results in premature replacement of the HTX fluidDTL evaluated the relative stability of three glycols, using the same inhibitor package

PDOPGEGAfter testing, the Susterra-based fluid exhibited significantly less darkening than the PG and EG fluids#7Fluid Comparison: Nitrite LevelsThe sample containing inhibited Susterra retained significantly more nitrites than the inhibited PG and EG samples

#8Fluid Comparison: Glycolate LevelsThe Susterra-based fluid produced fewer glycolates than the inhibited PG and EG fluids

#Susterra Propanediol Achieves NSF International Nonfood Compounds Registration2010 Press Release:DuPont Tate & Lyle Bio Products is excited to announce that Susterra propanediol has NSF International Nonfood Compounds Registration. Susterra is now acceptable as an ingredient for use in heat transfer fluids with incidental food contact (HTX-1) for use in and around food processing areas.Susterra propanediol offers formulators and suppliers a renewably sourced glycol base that meets the NSF International Registration Guidelines for Proprietary Substances and Nonfood Compounds.Formulators using NSF Registered Ingredients need only identify the Susterra propanediol name, the NSF Registration No. 141749, and concentration of Susterra in the finished product of their respective application form.9Ingredient for use in Heat Transfer Fluids with Incidental Food Contact (HTX-1)Susterra is approved as an ingredient for use in HTX with incidental food contact for use in and around food processing areas including breweries.#Appendix#Glycol Comparisons

#12Thermal Stability: Glycol Cracking SimulationThis study was conducted to evaluate relative stability of three glycols, using the same inhibitor package (2.2% of #2792)Concentrated glycols:712-132A: 1,2-Propanediol-based fluid (PG)712-132B: 1,3-Propanediol-based fluid (PDO)712-132C: Ethylene glycol-based fluid (EG)

Simulate semi-closed loop solar HTX fluid application; boil samples in a reflux condition for 16 hours and analyze the residual HTX fluid:Reflux temperature: 362F to 392F (183.3C to 200C)Boiling points at 1 ATM:PG = 371F (188.3C)PDO = 417F (213.9C)EG = 387F (197.2C)Solar thermal HTX often exceed 200C at elevated pressure during low flow or stagnation events, causing glycol cracking and production of corrosive organic compoundsWhen paired, the inhibitors and Susterra exhibited superior thermal stability vs. the PG and EG inhibited glycols#13The source is renewableEnabling a Renewable Economy...OilRefiningChemistryCropsBiomass Feedstock

Metabolic EngineeringThe source is not renewableFrom:To:ResinsMolded PartsFibers

#13Susterra Life Cycle Assessment* ComparisonFrom cradle-to-gate, the production of Susterra consumes 40% less energy and reduces greenhouse gas emissions by more than 40% versus petroleum-based 1,3-propanediol and propylene glycol.

*Susterra LCA data based on Loudon process design data; peer reviewed by Five Winds International#Japan Case Study: HTX for Beverage Processing

Susterra -based fluid is being used in Japan as a heat transfer fluid with low viscosity that is safe for use in food & beverage processing plants

#Chart12.18Susterra63.95Propanediol (PO route)1113.75Propylene Glycol103.6

GHG EmissionNon Renewable EnergyGHG Emissions (kg CO2 equiv/kg)Energy (MJ/kg)

Chart22.18Susterra5Propanediol (PO route)3.75Propylene GlycolSusterra63.9Propanediol (PO route)111Propylene Glycol103.6

Green House Gas Emissions- 56% less than Propanediol,- 42% less than Propylene GlycolNon Renewable Energy Use- 42% less than Propanediol, - 38% less than Propylene GlycolGHG EmissionNon Renewable EnergyGHG Emissions (kg CO2 equiv / kg)Non Renewable Energy (MJ/kg)

Sheet1Susterra PDOPropanediolPropylene GlycolGHG emissions2.1853.75Non Renewable Energy63.9111103.6Susterra PDOPropanediolPropylene Glycol2.1853.75Susterra% decrease56.4%42%63.9111103.6Susterra% decrease42.4%38%GHG EmissionNon Renewable EnergySusterra2.1863.9Propanediol (PO route)5.0111.0Propylene Glycol3.75103.6GHG EmissionNon Renewable EnergySusterra2.18Propanediol (PO route)5.0Propylene Glycol3.75Susterra63.9Propanediol (PO route)111.0Propylene Glycol103.6

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