Section 173.5 - Acrylate-acrylamide resinsAcrylate-acrylamide resins may be safely used in food under the following prescribed conditions:
(a) The additive consists of one of the following:(1) Acrylamide-acrylic acid resin (hydrolyzed polyacrylamide) is produced by the polymerization of acrylamide with partial hydrolysis, or by copolymerization of acrylamide and acrylic acid, with the greater part of the polymer being composed of acrylamide units.(2) Sodium polyacrylate-acrylamide resin is produced by the polymerization and subsequent hydrolysis of acrylonitrile in a sodium silicate-sodium hydroxide aqueous solution, with the greater part of the polymer being composed of acrylate units.(b) The additive contains not more than 0.05 percent of residual monomer calculated as acrylamide.(c) The additive is used or intended for use as follows:(1) The additive identified in paragraph (a)(1) of this section is used as a flocculent in the clarification of beet sugar juice and liquor or cane sugar juice and liquor or corn starch hydrolyzate in an amount not to exceed 5 parts per million by weight of the juice or 10 parts per million by weight of the liquor or the corn starch hydrolyzate.(2) The additive identified in paragraph (a)(2) of this section is used to control organic and mineral scale in beet sugar juice and liquor or cane sugar juice and liquor in an amount not to exceed 2.5 parts per million by weight of the juice or liquor.42 FR 14526, Mar. 15, 1977, as amended at 46 FR 30494, June 9, 1981