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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. 393

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Food Contact Substance:  Phosphonic acid, [[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]-, diethyl ester (CAS Reg. No. 976-56-7).
Notifier:  Ciba Specialty Chemicals Corporation
Manufacturer:  BASF Corporation
Intended Use:  As a chemically bound component of the polymeric backbone for use in polyethylene terephthalate homopolymers as described in 21 CFR 177.1630(e)(4)(ii) items 2 and 3, and complying with all applicable provisions of 21 CFR 177.1630.
Effective Date:  02/25/2004
Limitations/Specifications:  For use as an antioxidant/stabilizer in food contact polyethylene terephthalate homopolymers at levels not to exceed 0.11 weight percent of the finished polymer. To be used, in accordance with existing polyethylene terephthalate regulations, in contact with all food types under Conditions of Use E through G as described in Table 2, with expanded Conditions of Use C through G when used in contact with aqueous and acidic foods.
Environmental Impact Decisions:  Environmental Decisions Site