Doverphos 9 is diphenyl isooctyl phosphite (DPIOP). Doverphos 9 has the lowest molecular weight, and therefore the highest phosphorus content of our commercially available alkyl-aryl phosphites. Doverphos 9 is an effective liquid phosphite heat stabilizer for polyurethanes, coatings, ABS, and polycarbonates. Typical use levels range from 0.1 to 3.0% for most applications. Doverphos 9 can be used in rigid and flexible PVC applications as a secondary stabilizer to give brighter, more consistent colors and improve heat stability of PVC. Use levels in PVC range from 0.25 to 1.00%.Information provided by DoverChem |