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U.S. Department of Health and Human Services

Final Rules and Final Orders: Food Additives and Color Additives
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Petition(s): FAP 9B4142

Indirect Food Additives; Adjuvants, Production Aids, and Sanitizers

Petitioner: Ciba-Geigy Corp.
Docket number (legacy and/or former docket number(s)): (89F-0148)
Subject additive and intended use: amending the food additive regulations to provide for the safe use of 2,2'-(2,5-thiophenediyl)bis(5-tert-butylbenzoxazole) as an optical brightener for polycarbonate resins complying with 21 CFR 177.1580
21 CFR* affected: 178.3297; Colorants for polymers
Substance(s)*, (CAS Registry® No.):
  • 2,2'-(2,5-thiophenediyl)bis(5-tert-butylbenzoxazole), (7128-64-5)
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    Federal Register publication history: May 26, 1989; 54 FR 22813; Notice
    May 4, 1990; 55 FR 18721; Final rule; Effective date: May 4, 1990


     

    *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)
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