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U.S. Department of Health and Human Services

Threshold of Regulation (TOR) Exemptions
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TOR number 1996-004

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: Poly(hexamethylenebiguanide) hydrochloride (CAS Reg. No. 32289-58-0)
Use Limitations*: As an antimicrobial agent at levels up to 1000 ppm (0.1% by weight) in water-based latex adhesives complying with 21 CFR 175.105 for use at temperatures that do not exceed 120°F.
Requestor: Zeneca Biocides
Quick links to regulation: 175.105

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