Title 21: Food and Drugs
PART 172—FOOD ADDITIVES PERMITTED FOR DIRECT ADDITION TO FOOD FOR HUMAN CONSUMPTION
Subpart C—Coatings, Films and Related Substances
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§ 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 § 172.860.Oleic acid derived from tall Complying with § 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 § 172.820. As a defoamer and dispersing adjuvant.Polyhydric alcohol diesters of Complying with § 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 wax acids. °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.php.) 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 § 172.822. As a film former.Wood rosin..................... Color of K or paler.------------------------------------------------------------------------
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(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.
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------------------------------------------------------------------------ Component Limitations------------------------------------------------------------------------Vinyl chloride-vinylidene As an aqueous dispersion containing a chloride copolymer. minimum of 75 percent water when applied.Polyethylene glycol............ Complying with § 172.820. As a defoamer and dispersing adjuvant.Polyvinylpyrrolidone........... As an adjuvant.Potassium persulfate........... Do.Propylene glycol alginate...... Do.Sodium decylbenzenesulfonate... Do.------------------------------------------------------------------------
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(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:
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------------------------------------------------------------------------ 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 § 172.250.Sperm oil...................... As adjuvant.------------------------------------------------------------------------
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[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]
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