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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. 563

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Food Contact Substance:  Dimethyl sulfoisophthalate, sodium salt (DMSIP) (CAS Reg. No. 3965-55-7). [The CAS nomenclature is 1,3-Benzenedicarboxylic acid, 5-sulfo-, 1,3-dimethyl ester, sodium salt.]
Notifier:  Wellman Incorporated
Manufacturer:  Wellman Incorporated
Intended Use:  For use as a modifier in polyethylene terephthalate (PET).
Effective Date:  04/28/2006
Limitations/Specifications:  The FCS may be used at a maximum level of 1.0 mole percent based on total diacids (diesters), or 0.5 mole percent based on the finished PET, where the modified PET may be blended with up to 30 percent of hexanedioic acid polymer with 1,3 benezenedimethanamine (MXD-6) at levels not exceeding those specified in 21 CFR 177.1630(e)(4)(v). The finished blend is intended to be used in contact with all food types under Conditions of Use C through G, as described in Table 2.
Environmental Impact Decisions:  Environmental Decisions Site