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U.S. Department of Health and Human Services

Threshold of Regulation (TOR) Exemptions

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TOR number 2004-001

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: 2,4-pentanedione (CAS Reg. No. 123-54-6) and N,N-dimethylacetoacetamide (CAS Reg. No. 2044-64-6)
Use Limitations: For use at maximum levels of 0.05 percent and 0.08 percent by weight, respectively, to assist the curing of thermosetting styrenated polyester resins complying with 21 CFR 177.2420 and intended for repeat use as articles or as components of articles used in contact with food, the finished resins must meet the extractive limitations in 21 CFR 177.2420(c) and must be thoroughly cleansed prior to their use with food as specified in 21 CFR 177.2420(d).
Requestor: Interplastic Corp.
Quick links to regulation: 177.2420

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