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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. 675

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Food Contact Substance:  Mixture of 5-chloro-2-methyl-4-isothiazolin-3-one (CAS Reg. No. 26172-55-4) and 2-methyl-4-isothiazolin-3-one (CAS Reg. No. 2682-20-4) at a ratio of 3 parts to 1 part by weight.
Notifier:  Thor GmbH, Germany
Manufacturer:  Thor GmbH, Germany
Intended Use:  The FCS is intended for use as a preservative in aqueous coatings formulated using components permitted for use in coatings and/or in coating components complying with 21 CFR 175.300.
Effective Date:  02/08/2007
Limitations/Specifications:  The FCS will be used at a level not to exceed 45 milligrams per kilogram (based on isothiazolone active ingredient) in the aqueous coating formulation. For use with aqueous, acidic, and low-alcoholic foods under Conditions of Use A through H and with fatty food under Conditions of Use C through G, as described in Tables 1 and 2.
Environmental Impact Decisions:  Environmental Decisions Site