当前位置: 首页? 政策法规? 国外法规? §177.1020 丙烯?丁二?苯乙烯共聚物(Acrylonitrile/butadiene/sty-rene co-polymer)

§177.1020 丙烯?丁二?苯乙烯共聚物(Acrylonitrile/butadiene/sty-rene co-polymer)

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放大字体缩小字体2011-10-03 04:17:38 来源9a href="http://www.law.cornell.edu/cfr/text/21/177/1020" target="_blank" rel="nofollow">GPO浏览次数9span id="hits">3248
核心提示:本节规定的丙烯?丁二?苯乙烯共聚物,可安全地用做制品或制品组分,适用于除含乙醇的食品之外的所有食品。本节规定的物质含有73~78份丙烯腈?2~27份苯乙烯的基质聚合物84~89份以?1~16份的接枝橡胶组成接枝橡胶,含?2~77份的丁二烯和23~28份的苯乙烯组成的丁二?苯乙烯单?~13份。本节(a)中所指共聚物,可汗有其生产所需要的某些助剂,这些助剂可包括一般公认为用于食品是安全的物质。本节还规定了其质量指标和浸出物的限量、/div>
发布单位
FDA
FDA
发布文号 54 FR 24897
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 本节规定的丙烯腈/丁二?苯乙烯共聚物,可安全地用做制品或制品组分,适用于除含乙醇的食品之外的所有食品。本节规定的物质含有73~78份丙烯腈?2~27份苯乙烯的基质聚合物84~89份以?1~16份的接枝橡胶组成接枝橡胶,含?2~77份的丁二烯和23~28份的苯乙烯组成的丁二?苯乙烯单?~13份。本节(a)中所指共聚物,可汗有其生产所需要的某些助剂,这些助剂可包括一般公认为用于食品是安全的物质。本节还规定了其质量指标和浸出物的限量、/td>

  177.1020 Acrylonitrile/butadiene/sty-rene co-polymer.


   Acrylonitrile/butadiene/styrene copolymer identified in this section may be safely used as an article or component of articles intended for use with all foods, except those containing alcohol, under conditions of use E, F, and G described in table 2 of 176.170(c of this chapter.

  (a Identity. For the purpose of this section, the acrylonitrile/butadiene/styrene copolymer consists of:

  ? Eighty-four to eighty-nine parts by weight of a matrix polymer containing 73 to 78 parts by weight of acrylonitrile and 22 to 27 parts by weight of styrene; and

  ? Eleven to sixteen parts by weight of a grafted rubber consisting of (i 8 to 13 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 3 to 8 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 in this part, and the following:

Substance Limitations
2-Mercapto- ethanol The finished copolymer shall contain not more than 100 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 available 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_locations.html.


  (c Specifications. ? Nitrogen content of the copolymer is in the range of 16 to 18.5 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 when the finished food contact article is exposed to distilled water, 3 percent acetic acid, or n- heptane for 8 days at 120 F.

  ? The finished food-contact article shall yield not more than 0.0015 milligram per square inch of acrylonitrile monomer when exposed to distilled water and 3 percent acetic acid at 150 F for 15 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 24897, June 12, 1989]

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