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U.S. Department of Health and Human Services

Threshold of Regulation (TOR) Exemptions

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TOR number 2004-003

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: 1H,3H-benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone, polymer with 5,5'-carbonylbis[1,3-isobenzofuranedione] and 1,3-diisocyanatomethylbenzene (CAS Reg. No. 134119-41-8)
Use Limitations: As a filler at a maximum use level of 20% by weight in polytetrafluoroethylene seals, bushings and bearings in food-processing equipment intended for repeated use provided the temperature does not exceed 100E C. In accordance with good manufacturing practice, those food-contact articles containing the subject additive should be thoroughly cleansed prior to their first use in contact with food.
Requestor: HP Polymers, Inc

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