Doverphos 4-HR Trisnonylphenyl phosphite ICC Industries-Dover Antioxidants >> Phosphite ADHESIVE Trisnonylphenylphosphite. Used as antioxidant in adhesives. Contains 0.75% triisopropanolamine. Trisnonylphenylphosphite containing 0.75% triisopropanolamine. Used as antioxidant in adhesives.