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 C.
Color of WG or paler.Pentaerythritol ester of maleic Acid number of 134-145; drop-softening
anhydride-modified wood rosin. point of 127 C-173 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 C-118 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 C (170.6 to 181.4 F), as
wax acids. 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 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 C to 105 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]