Subpart A—General Provisions

1. CFR
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3. Title 21
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5. Chapter I
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7. Part 509
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9. Subpart A

Sections

Section numbering in the official eCFR can be non-consecutive. Omitted section numbers are not treated here as reserved unless the source explicitly labels them that way.

• 509.3
  § 509.3 Definitions and interpretations.
• 509.4
  § 509.4 Establishment of tolerances, regulatory limits, and action levels.
• 509.5
  § 509.5 Petitions.
• 509.6
  § 509.6 Added poisonous or deleterious substances.
• 509.7
  § 509.7 Unavoidability.
• 509.15
  § 509.15 Use of polychlorinated biphenyls (PCB's) in establishments manufacturing food-packaging materials.