[Code of Federal Regulations]
[Title 21, Volume 6]
[Revised as of April 1, 2001]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR573.340]

[Page 493]
 
                        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. 573.340  Diatomaceous earth.

    (a) Identity. The additive consists of siliceous skeletal material 
derived from various species of diatoms.
    (b) Specifications. The additive shall conform to the following 
specifications:

Lead, not more than 15 parts per million.
Arsenic (as As), not more than 20 parts per million
Fluorine, not more than 600 parts per million.

    (c) Uses. It is used or intended for use as an inert carrier or 
anticaking agent in animal feeds in an amount not to exceed 2 percent by 
weight of the total ration.