This regulation establishes a temporary tolerance of 0.5 parts per million (ppm) for 2,6-Diisopropylnaphthalene (2,6-DIPN) in or on potatoes, and 3 ppm in or on potato peels. Platte Chemical Company requested this tolerance under the Federal Food, Drug, and Cosmetic Act (FFDCA), as amended by the Food Quality Protection Act of 1996 (FQPA). The temporary tolerance will expire on May 31, 2006.