[Code of Federal Regulations]
[Title 21, Volume 6]
[Revised as of January 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR573.120]

[Page 498]
 
                        TITLE 21--FOOD AND DRUGS
 
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN 
                          SERVICES (CONTINUED)
 
PART 573--FOOD ADDITIVES PERMITTED IN FEED AND DRINKING WATER OF ANIMALS--Table of Contents
 
                    Subpart B--Food Additive Listing
 
Sec.  573.120  Acrylamide-acrylic acid resin.


    Acrylamide-acrylic acid resin (hydrolized polyacrylamide), only for 
the purposes of this section as described below, may be safely used in 
accordance with the following prescribed conditions:
    (a) The additive is produced by 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.
    (b) The additive meets the following specifications:
    (1) A minimum molecular weight of 3 million.
    (2) Viscosity range: 3,000 to 6,000 centipoises at 77 [deg]F in a 1 
percent aqueous solution as determined by LVF Brookfield Viscometer or 
equivalent using a number 6 spindle at 20 r.p.m.
    (3) Residual acrylamide: Not more than 0.05 percent.
    (c) It is used as a thickener and suspending agent in nonmedicated 
aqueous suspensions intended for addition to animal feeds.

[41 FR 38652, Sept. 10, 1976, as amended at 45 FR 38058, June 6, 1980]