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Title 21

Displaying title 21, up to date as of 6/10/2026. Title 21 was last amended 6/10/2026.
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Title 21Food and DrugsPart / Section
Chapter IFood and Drug Administration, Department of Health and Human Services1 – 1299
Subchapter BFood for Human Consumption100 – 199
Part 170Food Additives170.3 – 170.285
Subpart AGeneral Provisions170.3 – 170.19
§ 170.3Definitions.
§ 170.6Opinion letters on food additive status.
§ 170.10Food additives in standardized foods.
§ 170.15Adoption of regulation on initiative of Commissioner.
§ 170.17Exemption for investigational use and procedure for obtaining authorization to market edible products from experimental animals.
§ 170.18Tolerances for related food additives.
§ 170.19Pesticide chemicals in processed foods.
Subpart BFood Additive Safety170.20 – 170.39
§ 170.20General principles for evaluating the safety of food additives.
§ 170.22Safety factors to be considered.
§ 170.30Eligibility for classification as generally recognized as safe (GRAS).
§ 170.35Affirmation of generally recognized as safe (GRAS) status.
§ 170.38Determination of food additive status.
§ 170.39Threshold of regulation for substances used in food-contact articles.
Subpart CSpecific Administrative Rulings and Decisions170.45 – 170.60
§ 170.45Fluorine-containing compounds.
§ 170.50Glycine (aminoacetic acid) in food for human consumption.
§ 170.60Nitrites and/or nitrates in curing premixes.
Subpart DPremarket Notifications170.100 – 170.106
Subpart EGenerally Recognized as Safe (GRAS) Notice170.203 – 170.285