Surfynol® DF-37 by Evonik is a versatile, non-ionic, organic oil (acteylenic)-based defoamer (100% active liquid). It is used in adhesives. It provides surface wetting in water-based formulations. It offers excellent latex compatibility, good freeze-thaw stability and superior dewebbing, even at low concentrations. It is compliant under certain FDA regulations. The shelf life for Surfynol® DF-37 is 12 months from the date of manufacture. Recommended use level is 0.3 to 0.5%.