CFR > Title 21 - Food and Drugs > CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER B—FOOD FOR HUMAN CONSUMPTION (parts 100 to 191) > PART 176—INDIRECT FOOD ADDITIVES: PAPER AND PAPERBOARD COMPONENTS > SUBPART B—Substances for Use Only as Components of Paper and Paperboard (§176.110 to §176.350) > 176.150—Chelating agents used in the manufacture of paper and paperboard.

176.150—Chelating agents used in the manufacture of paper and paperboard.

The substances named in paragraph (a) of this section may be safely used in the manufacture of paper and paperboard, in accordance with the conditions prescribed in paragraphs (b) and (c) of this section:
(a) Chelating agents:
List of substances Limitations
Ammonium fructoheptonate
Ammonium glucoheptonate
Disodium ethylenediamine tetraacetate
Pentasodium salt of diethylenetriamine pentaacetate
Sodium fructoheptonate
Sodium glucoheptonate
Tetrasodium ethylenediamine tetra-acetate
Trisodium N-hydroxyethyl ethylenediamine triacetate
(b) Any one or any combination of the substances named is used or intended for use as chelating agents.
(c) The substances are added in an amount not greater than that required to accomplish the intended technical effect nor greater than any specific limitation, where such is provided.