Hi-Mar DFC-503 Metallic stearate Hi-Mar Specialties Defoamer / Antifoaming agent >> Silicone-free Acrylic/Acrylate Resins Vinyl Dispersible in water Hi-Mar DFC-503 Organic/ Metallic Stearate Defoamer Vinyl/ Acrylic 100% Acrylic styrene/acrylic May cause Gloss Reduction Organic, metallic stearate defoamer. Used for vinyl/acrylic, 100% acrylic and styrene/acrylic coatings. Can cause gloss reduction.