---
kind: "unit"
title: "21"
title_heading: "Food and Drugs"
key: "chI/subchB/part109"
level: "part"
label: "Part 109"
heading: "Unavoidable Contaminants in Food for Human Consumption and Food-Packaging Material"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/21/chI-subchB-part109"
sections_count: 7
---

# Part 109 — Unavoidable Contaminants in Food for Human Consumption and Food-Packaging Material

Title 21 C.F.R. — Food and Drugs › Chapter I — Food and Drug Administration, Department of Health and Human Services › Subchapter B — Food for Human Consumption

## Contents

- [Subpart A — General Provisions](/cfr/21/chI-subchB-part109-subpartA.md)
- [Subpart B — Tolerances for Unavoidable Poisonous or Deleterious Substances](/cfr/21/chI-subchB-part109-subpartB.md)
- [Subpart C — Regulatory Limits for Added Poisonous or Deleterious Substances [Reserved]](/cfr/21/chI-subchB-part109-subpartC.md)
- [Subpart D — Naturally Occurring Poisonous or Deleterious Substances [Reserved]](/cfr/21/chI-subchB-part109-subpartD.md)