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U.S. Department of Health and Human Services

Inventory of Effective Food Contact Substance (FCS) Notifications

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FCN No. 544

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Food Contact Substance:  5,7-Bis(1,1-dimethylethyl)-3-hydroxy-2(3H)-benzofuranone, reaction products with o-xylene (CAS Reg. No. 181314-48-7).
Notifier:  Ciba Specialty Chemicals Corporation
Manufacturer:  BASF Corporation
Intended Use:  As an antioxidant and/or stabilizer in polystyrene and impact polystyrene, compliant with 21 CFR 177.1640, in contact with all food types.
Effective Date:  02/16/2006
Limitations/Specifications:  The FCS will be used at levels not to exceed 0.1 percent by weight in the finished product under Conditions of Use B through H.
Environmental Impact Decisions:  Environmental Decisions Site