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U.S. Department of Health and Human Services

Threshold of Regulation (TOR) Exemptions
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TOR number 1998-017

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: The strontium salts of the azo coupling reaction products formed between either: (1) 6-hydroxynaphthalene-2-sulfonic acid (CAS Reg. No. 93-01-6) and a mixture of 2-amino-4-ethyl-5-chlorobenzenesulfonic acid (CAS Reg. No. 88-56-2) and 2-chloro-4-aminotoluene-5-sulfonic acid (CAS Reg. No. 88-51-7 )); or (2) 6-hydroxynaphthalene-2-sulfonic acid and p-aminobenzoic acid (CAS Reg. No. 150-13-0)
Use Limitations*: For use as colorants at levels up to 1% by weight in all polymers contacting non-fatty food under Conditions of Use A through H (Table 2, 21 CFR 176.170) and in all polymers contacting fatty food under Condition of Use C or below.
Requestor: Keller and Heckman on behalf of Engelhard Corporation
Quick links to regulation: 176.170

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