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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. 18

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Food Contact Substance:  Sodium acrylate/styrene sulfonate copolymer
Notifier:  Nalco Chemical Company
Manufacturer:  Nalco Chemical Company
Intended Use:  As an antiscalant boiler water treatment where steam from treated boilers may contact food.
Effective Date:  04/07/2000
Limitations/Specifications:  The food contact substance contains not more than 15% styrene sulfonate and has a molecular weight greater than 20,000 and a polydispersity of 2.0 - 3.3, as measured by a method entitled "Molecular Weight Distribution of Aqueous Anionic Polymers by Size Exclusion Chromatography (SEC) Using Synchropak GPC Columns". The substance must not exceed 20 ppm in feed water, must not be used in boilers at pressures above 1000 pounds per square inch gauge (psig), and must meet any applicable specifications prescribed in 21 CFR 173.310.
Environmental Impact Decisions:  Environmental Decisions Site