[Code of Federal Regulations]
[Title 21, Volume 3]
[Revised as of April 1, 2005]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR173.5]

[Page 118-119]
 
                        TITLE 21--FOOD AND DRUGS
 
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN 
                          SERVICES (CONTINUED)
 
PART 173_SECONDARY DIRECT FOOD ADDITIVES PERMITTED IN FOOD FOR HUMAN 
CONSUMPTION--Table of Contents
 
  Subpart A_Polymer Substances and Polymer Adjuvants for Food Treatment
 
Sec. 173.5  Acrylate-acrylamide resins.




  Subpart A_Polymer Substances and Polymer Adjuvants for Food Treatment

Sec.
173.5 Acrylate-acrylamide resins.
173.10 Modified polyacrylamide resin.
173.20 Ion-exchange membranes.
173.21 Perfluorinated ion exchange membranes.
173.25 Ion-exchange resins.
173.40 Molecular sieve resins.
173.45 Polymaleic acid and its sodium salt.
173.50 Polyvinylpolypyrrolidone.
173.55 Polyvinylpyrrolidone.
173.60 Dimethylamine-epichlorohydrin copolymer.
173.65 Divinylbenzene copolymer.
173.70 Chloromethylated aminated styrene-divinylbenzene resin.
173.73 Sodium polyacrylate.
173.75 Sorbitan monooleate.

            Subpart B_Enzyme Preparations and Microorganisms

173.110 Amyloglucosidase derived from Rhizopus niveus.
173.115 Alpha-acetolactate decarboxylase ([alpha]-ALDC) enzyme 
          preparation derived from a recombinant Bacillus subtilis.
173.120 Carbohydrase and cellulase derived from Aspergillus niger.
173.130 Carbohydrase derived from Rhizopus oryzae.
173.135 Catalase derived from Microccocus lysodeikticus.
173.140 Esterase-lipase derived from Mucor miehei.
173.145 Alpha-Galactosidase derived from Mortierella vinaceae var. 
          raffinoseutilizer.
173.150 Milk-clotting enzymes, microbial.
173.160 Candida guilliermondii.
173.165 Candida lipolytica.
173.170 Aminoglycoside 3'-phosphotransferase II.

  Subpart C_Solvents, Lubricants, Release Agents and Related Substances

173.210 Acetone.
173.220 1,3-Butylene glycol.
173.228 Ethyl acetate.
173.230 Ethylene dichloride.
173.240 Isopropyl alcohol.
173.250 Methyl alcohol residues.
173.255 Methylene chloride.
173.270 Hexane.
173.275 Hydrogenated sperm oil.
173.280 Solvent extraction process for citric acid.
173.290 Trichloroethylene.

                   Subpart D_Specific Usage Additives

173.300 Chlorine dioxide.
173.310 Boiler water additives.
173.315 Chemicals used in washing or to assist in the peeling of fruits 
          and vegetables.
173.320 Chemicals for controlling microorganisms in cane-sugar and beet-
          sugar mills.
173.322 Chemicals used in delinting cottonseed.
173.325 Acidified sodium chlorite solutions.
173.340 Defoaming agents.
173.342 Chlorofluorocarbon 113 and perfluorohexane.

[[Page 119]]

173.345 Chloropentafluoroethane.
173.350 Combustion product gas.
173.355 Dichlorodifluoromethane.
173.357 Materials used as fixing agents in the immobilization of enzyme 
          preparations.
173.360 Octafluorocyclobutane.
173.368 Ozone.
173.370 Peroxyacids.
173.375 Cetylpyridinium chloride.
173.385 Sodium methyl sulfate.
173.395 Trifluoromethane sulfonic acid.
173.400 Dimethyldialkylammonium chloride.

    Authority: 21 U.S.C. 321, 342, 348.

    Source: 42 FR 14526, Mar. 15, 1977, unless otherwise noted.

    Editorial Note: Nomenclature changes to part 173 appear at 61 FR 
14482, Apr. 2, 1996, 66 FR 56035, Nov. 6, 2001, and 66 FR 66742, Dec. 
27, 2001.



    Acrylate-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]