The Code of Federal Regulations is a codification of the general and permanent rules published in the Federal Register by the Executive departments and agencies of the United States Federal Government. This version is the Official U.S. Federal Government Code of Federal Regulations edition. 21 CFR Part 170 to 199 contains food additives, production, processing, and handling of food, indirect food additives, such as paper, cardboard, and hand sanitizers, dietary supplements, and more. Keywords: 21 CFR 170-199; 21 CFR Parts 170-199; cfr 21 parts 170-199; cfr 21 Parts 170-199; food additives, substances prohibited from use in human food; indirect food substances affirmed as generally recognized as safe; food ingredients; food and drug administration; fda; FDA; U.S. Food and Drug Administration;