Is a specialty surfactant based on a neutralized (potassium salt) ethoxylated phosphate ester. Strodex TH-4427 can be used in pplications typically requiring a mild HLB surfactant, imparting improved color acceptance, good wetting properties and reduces color float in waterborne latex paints. Strodex TH-4427 surfactant also can impart superior freeze-thaw and heat stability to waterborne acrylic-based latex paints compared to other surfactants and phosphate esters.