173.342—Chlorofluorocarbon 113 and perfluorohexane.
         A mixture of 99 percent chlorofluorocarbon 113 (1,1,2-trichloro-1,2,2-trifluoroethane) (CAS Reg. No. 76-13-1, also known as fluorocarbon 113, CFC 113 and FC 113) and 1 percent perfluorohexane (CAS Reg. No. 355-42-0) may be safely used in accordance with the following prescribed conditions:
    
    
    
        
        (b) 
         The additive mixture is intended for use to quickly cool or crust-freeze chickens sealed in intact bags composed of substances regulated in  parts 174, 175, 177, 178, and  § 179.45 of this chapter and conforming to any limitations or specifications in such regulations.