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Title 21

Displaying title 21, up to date as of 7/10/2026. Title 21 was last amended 7/09/2026.
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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 172Food Additives Permitted for Direct Addition to Food for Human Consumption172.5 – 172.898
Subpart AGeneral Provisions172.5
§ 172.5General provisions for direct food additives.
Subpart BFood Preservatives172.105 – 172.190
Subpart CCoatings, Films and Related Substances172.210 – 172.280
Subpart DSpecial Dietary and Nutritional Additives172.310 – 172.399
Subpart EAnticaking Agents172.410 – 172.490
§ 172.410Calcium silicate.
§ 172.430Iron ammonium citrate.
§ 172.480Silicon dioxide.
§ 172.490Yellow prussiate of soda.
Subpart FFlavoring Agents and Related Substances172.510 – 172.590
Subpart GGums, Chewing Gum Bases and Related Substances172.610 – 172.695
§ 172.610Arabinogalactan.
§ 172.615Chewing gum base.
§ 172.620Carrageenan.
§ 172.623Carrageenan with polysorbate 80.
§ 172.626Salts of carrageenan.
§ 172.655Furcelleran.
§ 172.660Salts of furcelleran.
§ 172.665Gellan gum.
§ 172.695Xanthan gum.
Subpart HOther Specific Usage Additives172.710 – 172.785
Subpart IMultipurpose Additives172.800 – 172.898