Doverphos 613 is alkyl (C12-C15) Bisphenol A Phosphite. Doverphos 613 is sanctioned under the FDA regulations for use in rigid PVC and rigid vinyl chloride copolymers in food packaging applications. Doverphos 613 improves the color, light stability, and clarity of PVC and vinyl copolymers when used in conjunction with primary metal stabilizers and epoxy stabilizers commonly used in these applications. Typical use levels range from 0.1 to 3.0%. Doverphos 613 can be used as a stabilizer for isocyanates either MDI or TDI or aliphatic isocyanates. Typical use levels range from 0.05 to 2.0%. Doverphos 613 helps maintain good color and reactivity of the isocyanate.