§ 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:
?。╝） The additive chlorofluorocarbon 113 has a purity of not less than 99.99 percent.
（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.
[55 FR 8913, Mar. 9, 1990]
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