[Code of Federal Regulations] [Title 21, Volume 3] [Revised as of April 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR181.24] [Page 463] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 181_PRIOR-SANCTIONED FOOD INGREDIENTS--Table of Contents Subpart B_Specific Prior-Sanctioned Food Ingredients Sec. 181.24 Antioxidants. Substances classified as antioxidants, when migrating from food- packaging material (limit of addition to food, 0.005 percent) shall include: Butylated hydroxyanisole. Butylated hydroxytoluene. Dilauryl thiodipropionate. Distearyl thiodipropionate. Gum guaiac. Nordihydroguairetic acid. Propyl gallate. Thiodipropionic acid. 2,4,5-Trihydroxy butyrophenone. [42 FR 14638, Mar. 15, 1977; 42 FR 56728, Oct. 28, 1977]