silicone-free food grade defoamer price Chemical Composition Deionized water Polydimethylsiloxanes Food-grade emulsifierã?? Food-grade thickener This product is mixed evenly with water and foam fluid then adding in Foam fluid. It can be also added in the foam fluid directly. The suitable dosage in common conditions is 0.01â of the total formulation weight, and dependent on the specific case of the customer. The defoamer dilution should be used as quickly as possible.