Petition(s): FAP 9B4123

Secondary Direct Food Additives Permitted In Food for Human Consumption; Perfluorinated Ion Exchange Membranes

• Petitioner: E. I. du Pont de Nemours and Co.
• Docket number (legacy and/or former docket number(s)): (89F-0031)
• Subject additive and intended use: amending the food additive regulations to provide for the safe use of a perfluorinated ion exchange membrane intended for repeated use in the treatment of bulk quantities of liquid foods at temperatures up to 70°C (158°C). The membrane is a copolymer of ethanesufonyl fluoride, 2-[1-[difluoro-[(trifluoroethenyl)oxy]methyl]-1,2,2,2-tetrafluoroethoxy]-1,1,2,2,-tetrafluoro with tetrafluoroethylene that is subsequently treated to hydrolyze the sulfonyl fluoride group to the sulfonic acid.
• 21 CFR* affected: 173.21 Perfluorinated Ion exchange membranes
• Substance(s)*, (CAS Registry® No.): 2-[1-[difluoro(trifluoroethenyl)oxy]methyl]-1,2,2,2-tetrafluoroethoxy]-1,1,2,2,-tetrafluoro-, polymer with tetrafluoroethene, (31175-20-9)
• Federal Register publication history: Feb 21, 1989 54 FR 7519 Notice ; Apr 4, 1994 59 FR 15623 Final Rule Apr 4, 1994

 

*Definitions

• 21 CFR: Title 21 of the Code of Federal Regulations.
• Substance: The name of the substance listed in the CFR.
• CAS Registry® No.: Chemical Abstract Service (CAS) Registry Number® for the substance.
• Petitions (see also Questions and Answers About the Petition Process)
  • FAP: Food Additive Petition
  • CAP: Color Additive Petition
  • GRP: GRAS Affirmation Petition (replaced by GRAS Notification Program in 1998)