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