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172.210 Coatings on fresh citrus fruit.

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[Code of Federal Regulations]
[Title 21, Volume 3]
[Revised as of April 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR172.210]

[Page 39-40]
 
                        TITLE 21--FOOD AND DRUGS
 
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN 
                          SERVICES (CONTINUED)
 
PART 172_FOOD ADDITIVES PERMITTED FOR DIRECT ADDITION TO FOOD FOR HUMAN 
CONSUMPTION--Table of Contents
 
            Subpart C_Coatings, Films and Related Substances
 
Sec.  172.210  Coatings on fresh citrus fruit.


    Coatings may be applied to fresh citrus fruit for protection of the 
fruit in accordance with the following conditions:
    (a) The coating is applied in the minimum amount required to 
accomplish the intended effect.
    (b) The coating may be formulated from the following components, 
each used in the minimum quantity required to accomplish the intended 
effect:
    (1) Substances generally recognized as safe for the purpose or 
previously sanctioned for the purpose.
    (2) One or more of the following:

------------------------------------------------------------------------
           Component                           Limitations
------------------------------------------------------------------------
Fatty acids....................  Complying with Sec.   172.860.
Oleic acid derived from tall     Complying with Sec.   172.862.
 oil fatty acids.
Partially hydrogenated rosin...  Catalytically hydrogenated to a maximum
                                  refractive index of 1.5012 at 100
                                  [deg]C. Color of WG or paler.

[[Page 40]]


Pentaerythritol ester of maleic  Acid number of 134-145; drop-softening
 anhydride-modified wood rosin.   point of 127 [deg]C-173 [deg]C;
                                  saponification number of less than
                                  280; and a color of M or paler.
 Do............................  Acid number of 176-186; drop-softening
                                  point of 110 [deg]C-118 [deg]C;
                                  saponification number of less than
                                  280; and a color of M or paler.
Polyethylene glycol............  Complying with Sec.   172.820. As a
                                  defoamer and dispersing adjuvant.
Polyhydric alcohol diesters of   Complying with Sec.   178.3770 of this
 oxidatively refined              chapter and having a dropping point of
 (Gersthofen process) montan      77 to 83 [deg]C (170.6 to 181.4
 wax acids.                       [deg]F), as determined by ASTM Method
                                  D566-76 (Reapproved 1982), ``Standard
                                  Test Method for Dropping Point of
                                  Lubricating Grease,'' which is
                                  incorporated by reference (Copies are
                                  available from the American Society
                                  for Testing and Materials, 100 Barr
                                  Harbor Dr., West Conshohocken,
                                  Philadelphia, PA 19428-2959, or 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--federal--
                                  regulations/ibr--locations.html.)
                                  using as a solvent xylene-ethyl
                                  alcohol in a 2:1 ratio instead of
                                  toluene-ethyl alcohol in a 2:1 ratio.
Sodium lauryl sulfate..........  Complying with Sec.   172.822. As a
                                  film former.
Wood rosin.....................  Color of K or paler.
------------------------------------------------------------------------

    (3) In lieu of the components listed in paragraph (b) (2) and (4) of 
this section, the following copolymer and one or more of the listed 
adjuvants.

------------------------------------------------------------------------
           Component                           Limitations
------------------------------------------------------------------------
Vinyl chloride-vinylidene        As an aqueous dispersion containing a
 chloride copolymer.              minimum of 75 percent water when
                                  applied.
Polyethylene glycol............  Complying with Sec.   172.820. As a
                                  defoamer and dispersing adjuvant.
Polyvinylpyrrolidone...........  As an adjuvant.
Potassium persulfate...........   Do.
Propylene glycol alginate......   Do.
Sodium decylbenzenesulfonate...   Do.
------------------------------------------------------------------------

    (4) In lieu of the components listed in paragraph (b) (2) and (3) of 
this section, the following rosin derivative and either or both of the 
listed adjuvants:

------------------------------------------------------------------------
           Component                           Limitations
------------------------------------------------------------------------
Calcium salt of partially        Having a maximum drop-softening point
 dimerized rosin.                 of 197 [deg]C and a color of H or
                                  paler. It is prepared by reaction with
                                  not more than 7 parts hydrated lime
                                  per 100 parts of partially dimerized
                                  rosin. The partially dimerized rosin
                                  is rosin that has been dimerized by
                                  sulfuric acid catalyst to a drop-
                                  softening point of 95 [deg]C to 105
                                  [deg]C and a color of WG or paler.
Petroleum naphtha..............  As adjuvant. Complying with Sec.
                                  172.250.
Sperm oil......................  As adjuvant.
------------------------------------------------------------------------


[42 FR 14491, Mar. 15, 1977; 49 FR 5747, Feb. 15, 1984, as amended at 51 
FR 2693, Jan. 21, 1986; 52 FR 18911, May 20, 1987; 61 FR 14245, Apr. 1, 
1996]





Additives that reference this regulation:


Source: U.S. Code of Federal Regulations - CFR Title 21, Part 172, Section 210


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