[Code of Federal Regulations]
[Title 21, Volume 3]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR186.1374]

[Page 588]
 
                        TITLE 21--FOOD AND DRUGS
 
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN 
                          SERVICES (CONTINUED)
 
PART 186_INDIRECT FOOD SUBSTANCES AFFIRMED AS GENERALLY RECOGNIZED 
 
        Subpart B_Listing of Specific Substances Affirmed as GRAS
 
Sec.  186.1374  Iron oxides.

    (a) Iron oxides (oxides of iron, CAS Reg. No. 1332-37-2) are 
undefined mixtures of iron (II) oxide (CAS Reg. No. 1345-25-1, black 
cubic crystals) and iron (III) oxide (CAS Reg. No. 1309-37-1, red-brown 
to black trigonal crystals).
    (b) In accordance with Sec.  186.1(b)(1), the ingredient is used as 
an indirect human food ingredient with no limitation other than current 
good manufacturing practice. The affirmation of this ingredient as 
generally recognized as safe (GRAS) as an indirect human food ingredient 
is based upon the following current good manufacturing practice 
conditions of use:
    (1) The ingredient is used as a constituent of paper and paperboard 
used for food packaging.
    (2) The ingredient is used at levels not to exceed current good 
manufacturing practice.
    (c) Prior sanctions for this ingredient different from the uses 
established in this section do not exist or have been waived.

[53 FR 16867, May 12, 1988; 53 FR 20939, June 7, 1988, as amended at 69 
FR 24512, May 4, 2004]

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