# Secondary Direct Food Additives Permitted in Food for Human Consumption; Ion Exchange Resins
> **Food and Drug Administration** · Final rule. · Published 1999-10-18 · Effective 1999-10-18 · 64 FR 56172
## Document
- **Document number:** 99-26885
- **Category:** fda-food
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 64 FR 56172
- **CFR reference:** 21 CFR 173
- **Publication date:** 1999-10-18
- **Effective date:** 1999-10-18
- **HHS docket:** Docket No. 98F-0749
## Abstract

The Food and Drug Administration (FDA) is amending the food additive regulations to provide for the safe use of the ion exchange resin, methylacrylate-divinyl benzene diethylene glycol divinyl ether terpolymer containing not less than 3.5 percent by weight of divinyl benzene and not more than 0.6 percent by weight of diethylene glycol divinyl ether, aminolyzed with dimethylaminopropylamine (DMAPA) to treat water and aqueous foods without limits on the conditions of use, and with a specification for DMAPA, an impurity in the ion exchange resin. This action is in response to a petition filed by Rohm and Haas Co.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/10/18/99-26885/secondary-direct-food-additives-permitted-in-food-for-human-consumption-ion-exchange-resins)
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