Code of Federal Regulations Title 21, Volume 3, April 1, 2017 contains regulations governing Food and Drugs and may also be referenced as: - Code of Federal Regulations Title 21, Volume 3, April 1, 2017 - CFR Title 21 - CFR 21, Food and Drugs - CFR 21, Parts 170 to 199, Food and Drugs This volume contains Parts 170 to 199: - Part 170; FOOD ADDITIVES - Part 171; FOOD ADDITIVE PETITIONS - Part 172; FOOD ADDITIVES PERMITTED FOR DIRECT ADDITION TO FOOD FOR HUMAN CONSUMPTION - Part 173; SECONDARY DIRECT FOOD ADDITIVES PERMITTED IN FOOD FOR HUMAN CONSUMPTION - Part 174; INDIRECT FOOD ADDITIVES: GENERAL - Part 175; INDIRECT FOOD ADDITIVES: ADHESIVES AND COMPONENTS OF COATINGS - Part 176; INDIRECT FOOD ADDITIVES: PAPER AND PAPERBOARD COMPONENTS - Part 177; INDIRECT FOOD ADDITIVES: POLYMERS - Part 178; INDIRECT FOOD ADDITIVES: ADJUVANTS, PRODUCTION AIDS, AND SANITIZERS - Part 179; IRRADIATION IN THE PRODUCTION, PROCESSING AND HANDLING OF FOOD - Part 180; FOOD ADDITIVES PERMITTED IN FOOD OR IN CONTACT WITH FOOD ON AN INTERIM BASIS PENDING ADDITIONAL STUDY - Part 181; PRIOR-SANCTIONED FOOD INGREDIENTS - Part 182; SUBSTANCES GENERALLY RECOGNIZED AS SAFE - Part 184; DIRECT FOOD SUBSTANCES AFFIRMED AS GENERALLY RECOGNIZED AS SAFE - Part 186; INDIRECT FOOD SUBSTANCES AFFIRMED AS GENERALLY RECOGNIZED AS SAFE - Part 189; SUBSTANCES PROHIBITED FROM USE IN HUMAN FOOD - Part 190; DIETARY SUPPLEMENTS - Parts 191-199; Reserved