§175.350 Vinyl acetate/crotonic acid copolymer
A copolymer of vinyl acetate and crotonic acid may be safely used as a coating or as a component of a coating which is the food-contact surface of polyolefin films intended for packaging food, subject to the provisions of this section.
?。╝） The copolymer may contain added optional substances to impart desired properties.
?。╞） The quantity of any optional substance does not exceed the amount reasonably required to accomplish the intended physical or technical effect nor any limitations further provided.
?。╟） Any optional substance that is the subject of a regulation in parts 174, 175, 176, 177, 178, and § 179.45 of this chapter conforms with any specifications in such regulation.
?。╠） Optional substances as provided in paragraph （a） of this section include:
?。?） Substances generally recognized as safe in food.
?。?） Substances subject to prior sanction or approval for uses with a copolymer of vinyl acetate and crotonic acid and used in accordance with such sanction or approval.
?。?） Substances identified in this subparagraph and subject to such limitations as are provided:
| List of substances | Limitations |
| Silica | |
| Japan wax |
（e） Copolymer of vinyl acetate and crotonic acid used as a coating or as a component of a coating conforming with the specifications of paragraph （e）（1） of this section are used as provided in paragraph （e）（2） of this section.
（1） Specifications. （i） The chloroform-soluble portion of the water extractives of the coated film obtained with distilled water at 120 °F for 24 hours does not exceed 0.5 milligram per square inch of coated surface.
?。╥i） The chloroform-soluble portion of the n- heptane extractives of the coated film obtained with n- heptane at 70 °F for 30 minutes does not exceed 0.5 milligram per square inch of coated surface.
?。?） Conditions of use. The copolymer of vinyl acetate and crotonic acid is used as a coating or as a component of a coating for polyolefin films for packaging bakery products and confectionery.
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