Substances
used in food-contact articles (e.g., food-packaging or food-processing
equipment) that migrate or that may be expected to migrate into food at
negligible levels may be reviewed under §170.39 of this chapter. The Food and
Drug Administration will exempt substances whose uses it determines meet the
criteria in §170.39 of this chapter from regulation as food additives and,
therefore, a food additive petition will not be required for the exempted
use.