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240 Part 177—Indirect Food Additives: Polymers

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240 Part 177—Indirect Food Additives: Polymers § 176.320 21 CFR Ch. I (4–1–15 Edition) § 176.320 Sodium nitrate-urea complex. 177.1040 Acrylonitrile/styrene copolymer. 177.1050 Acrylonitrile/styrene copolymer Sodium nitrate-urea complex may be modified with butadiene/styrene elas- safely used as a component of articles tomer. intended for use in producing, manu- 177.1060 n-Alkylglutarimide/acrylic copoly- facturing, packing, processing, pre- mers. paring, treating, packaging, trans- 177.1200 Cellophane. porting, or holding food, subject to the 177.1210 Closures with sealing gaskets for provisions of this section. food containers. 177.1211 Cross-linked polyacrylate copoly- (a) Sodium nitrate-urea complex is a mers. clathrate of approximately two parts 177.1240 1,4-Cyclohexylene dimethylene urea and one part sodium nitrate. terephthalate and 1,4-cyclohexylene (b) Sodium nitrate-urea complex con- dimethylene isophthalate copolymer. forming to the limitations prescribed 177.1310 Ethylene-acrylic acid copolymers. in paragraph (b)(1) of this section is 177.1312 Ethylene-carbon monoxide copoly- used as provided in paragraph (b)(2) of mers. 177.1315 Ethylene-1,4-cyclohexylene this section. dimethylene terephthalate copolymers. (1) Limitations. (i) It is used as a plas- 177.1320 Ethylene-ethyl acrylate copoly- ticizer in glassine and greaseproof mers. paper. 177.1330 Ionomeric resins. (ii) The amount used does not exceed 177.1340 Ethylene-methyl acrylate copoly- that required to accomplish its in- mer resins. tended technical effect or exceed 15 177.1345 Ethylene/1,3-phenylene oxyethylene percent by weight of the finished paper. isophthalate/terephthalate copolymer. 177.1350 Ethylene-vinyl acetate copolymers. (2) Conditions of use. The glassine and 177.1360 Ethylene-vinyl acetate-vinyl alco- greaseproof papers are used for pack- hol copolymers. aging dry food or as the food-contact 177.1380 Fluorocarbon resins. surface for dry food. 177.1390 Laminate structures for use at tem- peratures of 250 °F and above. § 176.350 Tamarind seed kernel pow- 177.1395 Laminate structures for use at tem- der. peratures between 120 °F and 250 °F. Tamarind seed kernel powder may be 177.1400 Hydroxyethyl cellulose film, water- insoluble. safely used as a component of articles 177.1420 Isobutylene polymers. intended for use in producing, manu- 177.1430 Isobutylene-butene copolymers. facturing, packing, processing, pre- 177.1440 4,4′-Isopropylidenediphenol- paring, treating, packaging, trans- epichlorohydrin resins minimum molec- porting, or holding food, subject to the ular weight 10,000. provisions of this section. 177.1460 Melamine-formaldehyde resins in (a) Tamarind seed kernel powder is molded articles. the ground kernel of tamarind seed 177.1480 Nitrile rubber modified acrylo- nitrile-methyl acrylate copolymers. (Tamarindus indica L.) after removal of 177.1500 Nylon resins. the seed coat. 177.1520 Olefin polymers. (b) It is used in the manufacture of 177.1550 Perfluorocarbon resins. paper and paperboard. 177.1555 Polyarylate resins. 177.1556 Polyaryletherketone resins. 177.1560 Polyarylsulfone resins. PART 177—INDIRECT FOOD 177.1570 Poly-1-butene resins and butene/ ADDITIVES: POLYMERS ethylene copolymers. 177.1580 Polycarbonate resins. Subpart A [Reserved] 177.1585 Polyestercarbonate resins. 177.1590 Polyester elastomers. Subpart B—Substances for Use as Basic 177.1595 Polyetherimide resin. Components of Single and Repeated 177.1600 Polyethylene resins, carboxyl modi- Use Food Contact Surfaces fied. 177.1610 Polyethylene, chlorinated. Sec. 177.1615 Polyethylene, fluorinated. 177.1010 Acrylic and modified acrylic plas- 177.1620 Polyethylene, oxidized. tics, semirigid and rigid. 177.1630 Polyethylene phthalate polymers. 177.1020 Acrylonitrile/butadiene/styrene co- 177.1632 Poly(phenyleneterephthalamide) polymer. resins. 177.1030 Acrylonitrile/butadiene/styrene/ 177.1635 Poly(p-methylstyrene) and rubber- methyl methacrylate copolymer. modified poly(p-methylstyrene). 240 VerDate Sep<11>2014 08:58 Jul 06, 2015 Jkt 235072 PO 00000 Frm 00250 Fmt 8010 Sfmt 8010 Y:\SGML\235072.XXX 235072 Lhorne on DSK7TPTVN1PROD with CFR Food and Drug Administration, HHS § 177.1010 177.1637 Poly(oxy-1,2- 177.2800 Textiles and textile fibers. ethanediyloxycarbonyl-2,6- 177.2910 Ultra-filtration membranes. naphthalenediylcarbonyl) resins. AUTHORITY: 21 U.S.C. 321, 342, 348, 379e. 177.1640 Polystyrene and rubber-modified polystyrene. SOURCE: 42 FR 14572, Mar. 15, 1977, unless 177.1650 Polysulfide polymer-polyepoxy res- otherwise noted. ins. 177.1655 Polysulfone resins. EDITORIAL NOTE: Nomenclature changes to 177.1660 Poly(tetramethylene part 177 appear at 61 FR 14482, Apr. 2, 1996, 66 terephthalate). FR 56035, Nov. 6, 2001, 66 FR 66742, Dec. 27, 177.1670 Polyvinyl alcohol film. 2001, 68 FR 15355, Mar. 31, 2003, and 70 FR 177.1680 Polyurethane resins. 72074, Dec. 1, 2005. 177.1810 Styrene block polymers. 177.1820 Styrene-maleic anhydride copoly- Subpart A [Reserved] mers. 177.1830 Styrene-methyl methacrylate co- polymers. Subpart B—Substances for Use as 177.1850 Textryls. Basic Components of Single 177.1900 Urea-formaldehyde resins in molded and Repeated Use Food Con- articles. 177.1950 Vinyl chloride-ethylene copoly- tact Surfaces mers. 177.1960 Vinyl chloride-hexene-1 copoly- § 177.1010 Acrylic and modified acrylic mers. plastics, semirigid and rigid. 177.1970 Vinyl chloride-lauryl vinyl ether Semirigid and rigid acrylic and modi- copolymers. fied acrylic plastics may be safely used 177.1980 Vinyl chloride-propylene copoly- as articles intended for use in contact mers. with food, in accordance with the fol- 177.1990 Vinylidene chloride/methyl acry- late copolymers. lowing prescribed conditions. The 177.2000 Vinylidene chloride/methyl acry- acrylic and modified acrylic polymers late/methyl methacrylate polymers. or plastics described in this section also may be safely used as components Subpart C—Substances for Use Only as of articles intended for use in contact Components of Articles Intended for with food. Repeated Use (a) The optional substances that may be used in the formulation of the 177.2210 Ethylene polymer, chlorosulfonated. semirigid and rigid acrylic and modi- 177.2250 Filters, microporous polymeric. fied acrylic plastics, or in the formula- 177.2260 Filters, resin-bonded. tion of acrylic and modified acrylic 177.2280 4,4′-Isopropylidenediphenol- components of articles, include sub- epichlorohydrin thermosetting epoxy stances generally recognized as safe in resins. food, substances used in accordance 177.2355 Mineral reinforced nylon resins. with a prior sanction or approval, sub- 177.2400 Perfluorocarbon cured elastomers. 177.2410 Phenolic resins in molded articles. stances permitted for use in such plas- 177.2415 Poly(aryletherketone) resins. tics by regulations in parts 170 through 177.2420 Polyester resins, cross-linked. 189 of this chapter, and substances 177.2430 Polyether resins, chlorinated. identified in this paragraph. At least 50 177.2440 Polyethersulfone resins. weight-percent of the polymer content 177.2450 Polyamide-imide resins. of the acrylic and modified acrylic ma- 177.2460 Poly(2,6-dimethyl-1,4-phenylene) terials used as finished articles or as oxide resins. components of articles shall consist of 177.2465 Polymethylmethacrylate/poly(tri methoxysilylpropyl) methacrylate co- polymer units derived from one or polymers. more of the acrylic or methacrylic 177.2470 Polyoxymethylene copolymer. monomers listed in paragraph (a)(1) of 177.2480 Polyoxymethylene homopolymer. this section. 177.2490 Polyphenylene sulfide resins. (1) Homopolymers and copolymers of 177.2500 Polyphenylene sulfone resins. the following monomers: 177.2510 Polyvinylidene fluoride resins. 177.2550 Reverse osmosis membranes. n-Butyl acrylate. 177.2600 Rubber articles intended for re- n-Butyl methacrylate. peated use. Ethyl acrylate. 177.2710 Styrene-divinylbenzene resins, 2-Ethylhexyl acrylate. cross-linked. Ethyl methacrylate. 241 VerDate Sep<11>2014 08:58 Jul 06, 2015 Jkt 235072 PO 00000 Frm 00251 Fmt 8010 Sfmt 8010 Y:\SGML\235072.XXX 235072 Lhorne on DSK7TPTVN1PROD with CFR § 177.1010 21 CFR Ch. I (4–1–15 Edition) Methyl acrylate. Methacryloxyacetamidoethylethylene urea. Methyl methacrylate. Methacryloxyacetic acid. n-Propyl methacrylate. (2) Copolymers produced by copolym- 3,5,5-Trimethylcyclohexyl methacrylate. erizing one or more of the monomers listed in paragraph (a)(1) of this section (4) Polymers identified in paragraphs with one or more of the following (a)(1), (2), and (3) of this section are monomers: mixed together and/or with the fol- lowing polymers, provided that no Acrylonitrile. chemical reactions, other than addi- Methacrylonitrile. tion reactions, occur when they are a-Methylstyrene. Styrene. mixed: Vinyl chloride. Butadiene-acrylonitrile copolymers. Vinylidene chloride. Butadiene-acrylonitrile-styrene copolymers. (3) Polymers identified in paragraphs Butadiene-acrylonitrile-styrene-methyl (a)(1) and (2) of this section containing methacrylic copolymers. Butadiene-styrene copolymers. no more than 5 weight-percent of total Butyl rubber. polymer units derived by copolym- Natural rubber. erization with one or more of the Polybutadiene. monomers listed in paragraph (a)(3)(i) Poly (3-chloro-1,3-butadiene). and (ii) of this section. Monomers list- Polyester identified in § 175.300(b)(3)(vii) of ed in paragraph (a)(3)(ii) of this section this chapter. are limited to use only in plastic arti- Polyvinyl chloride. cles intended for repeated use in con- Vinyl chloride copolymers complying with § 177.1980. tact with
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