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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. 63

 
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Food Contact Substance:  Styrene block polymers with 2-methyl-1,3-butadiene and 1,3-butadiene, hydrogenated (CAS Reg. No.132778-07-5) in food contact applications.
 
Notifier:  Kuraray America, Inc., Kuraray Co., Ltd., Kuraray Europe, GmbH, and SEPTON Company of America
 
Manufacturer:  Kuraray America, Inc., Kuraray Co., Ltd., Kuraray Europe, GmbH, and SEPTON Company of America
 
Intended Use:  For use as a basic resin in food-contact articles.
 
Effective Date:  07/22/2000
 
Limitations/Specifications:  For use in contact with food of Types I, II, IVB, VIA, VIB, VIIB, and VIII identified in Table 1 under conditions of use B, C, D, E, F, G, and H as described in Table 2, and food of Types III, IVA, V, VIC, VIIA, and IX under conditions of use D, E, F, and G. The finished resin must comply with the following specifications: Molecular weight (minimum): 68,000 (as the minimum number average molecular weight); Solubility: Completely soluble in toluene. Glass transition points: -57°C (-70°F) to -51°C(-59.8°F) and 91°C(195.8°F) to 102°C(215°F). Maximum extractable fraction in distilled water at specified temperatures, times, and thicknesses: 0.001 mg/cm2(0.01 mg/in2) of surface at reflux temperature for 2 hr on a 0.1 cm (0.04 in) thick sample. Maximum extractable fraction in 50% ethanol at specified temperatures, times, and thicknesses 0.001 mg/cm2(0.01 mg/in2) of surface at 66°C (150° F) for 2 hr on a 0.1 cm (0.04 in) thick sample.
 
Environmental Impact Decisions:  Environmental Decisions Site
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