[Code of Federal Regulations]
[Title 21, Volume 6]
[Revised as of April 1, 2006]
From the U.S. Government Printing Office via GPO Access
TITLE 21--FOOD AND DRUGS
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN
PART 573_FOOD ADDITIVES PERMITTED IN FEED AND DRINKING WATER OF ANIMALS
--Table of Contents
Subpart B_Food Additive Listing
Sec. 573.320 Diammonium phosphate.
The food additive diammonium phosphate may be safely used in
feed in accordance with the following prescribed conditions:
(a) The food additive is the product resulting from the
neutralization of feeding-phosphoric-acid or defluorinated wet-process
phosphoric acid with anhydrous ammonia. It contains not less than 106.25
percent equivalent crude protein (nitrogen x 6.25) and 20 percent
phosphorus. It contains not more than the following:
1 part fluorine to 100 parts phosphorus.
75 parts per million or arsenic (as As).
30 parts per million of heavy metals, as lead (Pb).
(b) It is used in ruminant feeds as a source of phosphorus and
nitrogen in an amount that supplies not more than 2 percent of
equivalent crude protein in the total daily ration.
(c) To assure safe use of the additive, the label and labeling of
the additive and that of any feed additive supplement, feed additive
concentrate, feed additive premix, or complete feed prepared therefrom
shall contain, in addition to other information required by the act, the
(1) The name of the additive.
(2) The maximum percentage of equivalent crude protein from the
(3) If the feed additive premix, feed additive concentrate, or feed
additive supplement contains more than 2 percent equivalent crude
protein from diammonium phosphate, adequate directions for use and a
prominent statement, ``Warning--This feed should be used only in
accordance with directions furnished on the label.''
Additives that reference this regulation: