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§177.2710 苯乙?二乙烯基苯交联树?Styrene-divinylbenzene resins, cross-linked)

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放大字体缩小字体2011-10-15 05:25:35 来源9a href="http://www.law.cornell.edu/cfr/text/21/177/2710" target="_blank" rel="nofollow">GPO浏览次数9span id="hits">3097
核心提示:苯乙烯/二乙烯基苯交联树脂由苯乙烯与二乙烯基共聚而成。本树脂应符合本段中所规定的浸提物限量:将被测树脂磨成或切成小粒,应能通过美国3号标准筛而留在美?0号标准筛上。取本树脂式?00g,用100mL乙酸乙酯在回流温度下浸提1h,所得总浸提物量不得超过树脂重量的1%。凡含有本树脂的制品,在初次使用于接触食品前,应按良好生产操作规定彻底清洗、/div>
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备注 苯乙?二乙烯基苯交联树脂由苯乙烯与二乙烯基共聚而成。本树脂应符合本段中所规定的浸提物限量:将被测树脂磨成或切成小粒,应能通过美国3号标准筛而留在美?0号标准筛上。取本树脂式?00g,用100mL乙酸乙酯在回流温度下浸提1h,所得总浸提物量不得超过树脂重量的1%。凡含有本树脂的制品,在初次使用于接触食品前,应按良好生产操作规定彻底清洗、/td>

177.2710 Styrene-divinylbenzene resins, cross- linked


   Styrene-divinylbenzene cross- linked copolymer resins may be safely used as articles or components of articles intended for repeated use in producing, manufacturing, packing, processing, preparing, treating, packaging, transporting, or holding food, in accordance with the following prescribed conditions:

  (a The resins are produced by the copolymerization of styrene with divinylbenzene.

  (b The resins meet the extractives limitations prescribed in this paragraph:

  ? The resins to be tested are ground or cut into small particles that will pass through a U.S. standard sieve No. 3 and that will be held on a U.S. standard sieve No. 20.

  ? A 100-gram sample of the resins, when extracted with 100 milliliters of ethyl acetate at reflux temperature for 1 hour, yields total extractives not to exceed 1 percent by weight of the resins.

  (c In accordance withgood manufacturing practice, finished articles containing the resins shall be thoroughly cleansed prior to their first use in contact with food.

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