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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. 248

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Food Contact Substance:  Silver zinc glass, of nominal composition silver (0.47 percent +/- 0.1 percent)-zinc (21 percent +/- 2.0 percent)-aluminum-boron phosphate (=/> 76.4 percent) glass.
Notifier:  Ciba Specialty Chemicals Corporation
Manufacturer:  Kanebo Chemical Industries, Ltd.
Intended Use:  The food contact substance (FCS) will be used as an antimicrobial agent in all types of food-contact polymers.
Effective Date:  08/16/2002
Limitations/Specifications:  The FCS will be used in contact with all types of food at levels not to exceed 3.0 percent by weight of the finished polymers. The silver content of the FCS shall not exceed 0.57 percent by weight.
Environmental Impact Decisions:  Environmental Decisions Site