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U.S. Department of Health and Human Services

Threshold of Regulation (TOR) Exemptions
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TOR number 1997-004

Threshold of Regulation Exemptions are generally applicable and are effective for the food contact substance (FCS) for the listed intended use regardless of manufacturer or supplier.
Food Contact Substance: An ion exchange resin manufactured by the reaction of divinyl benzene, methyl acrylate and butyl acrylate followed by complete hydrolysis of the methyl and butyl ester side chains (CAS Reg. No. 9052-45-3)
Use Limitations*: For repeated-use food-contact applications involving potable water and aqueous, acidic and alcoholic foods at temperatures of 82°C (180°F) or below. The resin must be prewashed in accordance with good manufacturing practice and meet all applicable specifications in 21 CFR 173.25(c).
Requestor: Dow Chemical
Quick links to regulation: 173.25

*For references to food types and conditions of use, see Food Types & Conditions of Use for Food Contact Substances.
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