CFR > Title 21 - Food and Drugs > CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER A—GENERAL (parts 1 to 99) > PART 2—GENERAL ADMINISTRATIVE RULINGS AND DECISIONS > SUBPART F—Caustic Poisons (§2.110 to §2.110) > 2.110—Definition of ammonia under Federal Caustic Poison Act.