[Code of Federal Regulations]
[Title 21, Volume 3]
[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 184_DIRECT FOOD SUBSTANCES AFFIRMED AS GENERALLY RECOGNIZED AS
SAFE--Table of Contents
Subpart B_Listing of Specific Substances Affirmed as GRAS
Sec. 184.1434 Magnesium phosphate.
(a) Magnesium phosphate includes both magnesium phosphate, dibasic,
and magnesium phosphate, tribasic. Magnesium phosphate, dibasic
(MgHPO4[middot]3H2O, CAS Reg. No. 7782-0975-094)
occurs naturally as the white, crystalline mineral newberyite. It is
prepared commercially as a precipitate formed by treating a solution of
magnesium sulfate with disodium phosphate under controlled conditions.
Magnesium phosphate, tribasic
(Mg3(PO4)2[middot]xH2O, CAS Reg. No.
7757-87-1) may contain 4, 5, or 8 molecules of water of hydration. It is
produced as a precipitate from a solution of magnesite with phosphoric
(b) Magnesium phosphate, dibasic, meets the specifications of the
Food Chemicals Codex, 3d Ed. (1981), p. 179, which is incorporated by
reference. Magnesium phosphate, tribasic, meets the specifications of
the Food Chemicals Codex, 3d Ed. (1981), p. 180, which is incorporated
by reference. Copies are available from the National Academy Press, 2101
Constitution Ave. NW., Washington, DC 20418, or available for inspection
at the National Archives and Records Administration (NARA). For
information on the availability of this material at NARA, call 202-741-
6030, or go to: http://www.archives.gov/federal--register/code--of--
(c) In accordance with Sec. 184.1(b)(1), the ingredient is used in
food with no limitation other than current good manufacturing practice.
The affirmation of this ingredient as generally recognized as safe
(GRAS) as a direct human food ingredient is based upon the following
current good manufacturing practice conditions of use:
(1) The ingredient is used as a nutrient supplement as defined in
Sec. 170.3(o)(20) of this chapter and a pH control agent as defined in
Sec. 170.3(o)(23) of this chapter.
(2) The ingredient is used in foods at levels not to exceed current
good manufacturing practice. The ingredient also may be used in infant
formula in accordance with section 412(g) of the Federal Food, Drug, and
Cosmetic Act (the act) or with regulations promulgated under section
412(a)(2) of the Act.
(d) Prior sanctions for this ingredient different from the uses
established in this section do not exist or have been waived.
[50 FR 13560, Apr. 5, 1985, as amended at 69 FR 24512, May 4, 2004]
Additives that reference this regulation: