---
kind: "section"
citation: "21 C.F.R. § 175.350"
title: "21"
number: "175.350"
heading: "Vinyl acetate/crotonic acid copolymer."
url: "https://uscodex.org/cfr/21/175.350"
---

# §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.

- (a) The copolymer may contain added optional substances to impart desired properties.
- (b) 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.
- (c) Any optional substance that is the subject of a regulation in parts [174](/cfr/21/part174.md), [175](/cfr/21/part175.md), 176, 177, 178, and [§ 179.45](/cfr/21/179.45.md) of this chapter conforms with any specifications in such regulation.
- (d) **Optional substances as provided in paragraph (a) of this section include—**
  - (1) **Substances generally recognized as safe in food.**
  - (2) 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.
  - (3) **Substances identified in this subparagraph and subject to such limitations as are provided—**
- (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)](#e-1) of this section are used as provided in [paragraph (e)(2)](#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.
    - (ii) 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.
  - (2) **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.

## Notes

### Authority

Authority: 21 U.S.C. 321, 342, 348, 379e.

### Source

Source: 42 FR 14534, Mar. 15, 1977, unless otherwise noted.