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§177.1030 丙烯?丁二?苯乙?甲基丙烯酸甲酯共聚物(Acrylonitrile/butadiene/styrene/methyl methacrylate copolymer)

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放大字体缩小字体2011-10-04 09:21:44 来源9a href="http://www.law.cornell.edu/cfr/text/21/177/1030" target="_blank" rel="nofollow">GPO浏览次数9span id="hits">3279
核心提示:本节所指丙烯腈/丁二?苯乙?甲基丙烯酸甲酯共聚物,可安全的用做制品后制品组分,。本节所指物质组成为:由含有64~69份丙烯腈?5~30份的苯乙烯和4~6份的甲基丙烯酸甲酯所组成的基本聚合物73~79份等物质组成。本节(a)中所指的共聚物,可含有其生产所需要的助剂,这些助剂可包括在食品中一般公认为是安全的物质或可使用的物质。本节规定了丙烯?丁二?苯乙?甲基丙烯酸甲酯共聚物的质量指标、/div>
发布单位
FDA
FDA
发布文号 54 FR 24898
发布日期 1989-06-11 生效日期 暂无
有效性状?/th> 废止日期 暂无
备注 本节所指丙烯腈/丁二?苯乙?甲基丙烯酸甲酯共聚物,可安全的用做制品后制品组分,。本节所指物质组成为:由含有64~69份丙烯腈?5~30份的苯乙烯和4~6份的甲基丙烯酸甲酯所组成的基本聚合物73~79份等物质组成。本节(a)中所指的共聚物,可含有其生产所需要的助剂,这些助剂可包括在食品中一般公认为是安全的物质或可使用的物质。本节规定了丙烯?丁二?苯乙?甲基丙烯酸甲酯共聚物的质量指标、/td>

  177.1030 Acrylonitrile/butadiene/styrene/methyl methacrylate copolymer.

  Acrylonitrile/butadiene/styrene/methyl methacrylate copolymer identified in this section may be safely used as an article or component of articles intended for use with food identified in table 1 of 176.170(c of this chapter as Type I, II, III, IVA, IVB, V, VIB, (except bottles intended to hold carbonated beverages? VIIA, VIIB, VIII and IX, under conditions of use C, D, E, F, and G described in table 2 of 176.170(c of this chapter with a high temperature limitation of 190 F.

  (a Identity. For the purpose of this section, acrylonitrile/butadiene/styrene/methyl methacrylate copolymer consists of: ? 73 to 79 parts by weight of a matrix polymer containing 64 to 69 parts by weight of acrylonitrile, 25 to 30 parts by weight of styrene and 4 to 6 parts by weight of methyl methacrylate; and ? 21 to 27 parts by weight of a grafted rubber consisting of (i 16 to 20 parts of butadiene/styrene/elastomer containing 72 to 77 parts by weight of butadiene and 23 to 28 parts by weight of styrene and (ii 5 to 10 parts by weight of a graft polymer having the same composition range as the matrix polymer.

  (b Adjuvants. The copolymer identified in paragraph (a of this section may contain adjuvant substances required in its production. Such adjuvants may include substances generally recognized as safe in food, substances used in accordance with prior sanction, substances permitted under applicable regulations in this part, and the following:

Substances Limitations
2-Mercaptoethanol The finished copolymer shall contain not more than 800 ppm 2-mercaptoethanol acrylonitrile adduct as determined by a method titled Analysis of Cycopac Resin for Residual -(2-Hydroxyethylmercapto) propionitrile, which is incorporated by reference. Copies are avail-able from the Bureau of Foods (HFS-200), Food and Drug Administration, 5100 Paint Branch Pkwy., College Park, MD 20740, or available for inspection 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


  (c Specifications. ? Nitrogen content of the copolymer is in the range of 13.0 to 16.0 percent as determined by Micro-Kjeldahl analysis.

  ? Residual acrylonitrile monomer content of the finished copolymer articles is not more than 11 parts per million as determined by a gas chromatographic method titled Determination of Residual Acrylonitrile and Styrene Monomers-Gas Chromatographic Internal Standard Method, which is incorporated by reference. Copies are available from the Center for Food Safety and Applied Nutrition (HFS-200? Food and Drug Administration, 5100 Paint Branch Pkwy., College Park, MD 20740, or available for inspection 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.

  (d Extractive limitations. ? Total nonvolatile extractives not to exceed 0.0005 milligram per square inch surface area of the food-contact article when exposed to distilled water, 3 percent acetic acid, 50 percent ethanol, and n- heptane for 10 days at 120 F.

  ? The finished food-contact article shall yield not more than 0.0025 milligram per square inch of acrylonitrile monomer when exposed to distilled water, 3 percent acetic acid and n- heptane at 190 F for 2 hours, cooled to 120 F ?0 to 90 minutes and maintained at 120 F for 10 days when analyzed by a polarographic method titled Extracted Acrylonitrile by Differential Pulse Polarography, which is incorporated by reference. Copies are available from the Center for Food Safety and Applied Nutrition (HFS-200? Food and Drug Administration, 5100 Paint Branch Pkwy., College Park, MD 20740, or available for inspection 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.

  (e Acrylonitrile copolymers identified in this section shall comply with the provisions of 180.22 of this chapter.

  (f Acrylonitrile copolymers identified in this section are not authorized to be used to fabricate beverage containers.

  [42 FR 14572, Mar. 15, 1977, as amended at 42 FR 48543, Sept. 23, 1977; 47 FR 11841, Mar. 19, 1982; 54 FR 24898, June 12, 1989]

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