[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: 21CFR173.355] [Page 146] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 173_SECONDARY DIRECT FOOD ADDITIVES PERMITTED IN FOOD FOR HUMAN CONSUMPTION--Table of Contents Subpart D_Specific Usage Additives Sec. 173.355 Dichlorodifluoromethane. The food additive dichlorodi fluoromethane may be safely used in food in accordance with the following prescribed conditions: (a) The additive has a purity of not less than 99.97 percent. (b) It is used or intended for use, in accordance with good manufacturing practice, as a direct-contact freezing agent for foods. (c) To assure safe use of the additive: (1) The label of its container shall bear, in addition to the other information required by the act, the following: (i) The name of the additive, dichlorodifluoromethane, with or without the parenthetical name ``Food Freezant 12''. (ii) The designation ``food grade''. (2) The label or labeling of the food additive container shall bear adequate directions for use.