[Code of Federal Regulations] [Title 21, Volume 3] [Revised as of April 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR176.150] [Page 184-185] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 176--INDIRECT FOOD ADDITIVES: PAPER AND PAPERBOARD COMPONENTS--Table of Contents Subpart B--Substances for Use Only as Components of Paper and Paperboard Sec. 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.................... [[Page 185]] Sodium glucoheptonate..................... Tetrasodium ethylenediamine tetraacetate.. 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.