[Code of Federal Regulations]
[Title 21, Volume 3]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR177.1312]
[Page 257-258]
TITLE 21--FOOD AND DRUGS
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN
SERVICES (CONTINUED)
PART 177 INDIRECT FOOD ADDITIVES: POLYMERS--Table of Contents
Subpart B Substances for Use as Basic Components of Single and Repeated
Use Food Contact Surfaces
Sec. 177.1312 Ethylene-carbon monoxide copolymers.
The ethylene-carbon monoxide copolymers identified in paragraph (a)
of this section may be safely used as components of articles intended
for use in contact with food subject to the provisions of this section.
(a) Identity. For the purposes of this section, ethylene-carbon
monoxide copolymers (CAS Reg. No. 25052-62-4) consist of the basic
polymers produced by the copolymerization of ethylene and carbon
monoxide such that the copolymers contain not more than 30 weight-
percent of polymer units derived from carbon monoxide.
(b) Conditions of use. (1) The polymers may be safely used as
components of the food-contact or interior core layer of multilaminate
food-contact articles.
(2) The polymers may be safely used as food-contact materials at
temperatures not to exceed 121 [deg]C (250 [deg]F).
(c) Specifications. (1) Food-contact layers formed from the basic
copolymer identified in paragraph (a) of this section shall be limited
to a thickness of not more than 0.01 centimeter (0.004 inch).
(2) The copolymers identified in paragraph (a) of this section shall
have a melt index not greater than 500 as determined by ASTM method
D1238-82, condition E ``Standard Test Method for Flow Rates of
Thermoplastics by Extrusion Plastometer,'' which is incorporated by
reference in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies
may be obtained from the American Society for Testing Materials, 100
Barr Harbor Dr., West Conshohocken, Philadelphia, PA 19428-2959, or may
be examined at the Center for Food Safety and Applied Nutrition (HFS-
200), Food and Drug Administration, 5100 Paint Branch Pkwy., College
Park, MD 20740, or 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.
(3) The basic copolymer identified in paragraph (a) of this section,
when extracted with the solvent or solvents characterizing the type of
food and under the conditions of time and temperature characterizing the
conditions of its intended use, as determined from tables 1 and 2 of
Sec. 176.170(c) of this chapter, yields net chloroform-soluble
extractives in each extracting solvent
[[Page 258]]
not to exceed 0.5 milligram per square inch of food-contact surface when
tested by methods described in Sec. 176.170(d) of this chapter.
(4) The provisions of this section are not applicable to ethylene-
carbon monoxide copolymers complying with Sec. 175.105 of this chapter.
[57 FR 32422, July 22, 1992]
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