§177.2710 Styrene-pinylbenzene resins, cross-
Styrene-pinylbenzene cross-
?。╝) The resins are produced by the copolymerization of styrene with pinylbenzene.
?。╞) 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.
(2) 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.
?。╟) In accordance with good manufacturing practice, finished articles containing the resins shall be thoroughly cleansed prior to their first use in contact with food.
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