[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: 21CFR178.3610]
[Page 417]
TITLE 21--FOOD AND DRUGS
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN
SERVICES (CONTINUED)
PART 178 INDIRECT FOOD ADDITIVES: ADJUVANTS, PRODUCTION AIDS, AND
Subpart D Certain Adjuvants and Production Aids
Sec. 178.3610 [b.alpha]-Methylstyrene-vinyltoluene resins, hydrogenated.
Hydrogenated [alpha]-methylstyrene-vinyltoluene copolymer resins
having a molar ratio of 1 [alpha]-methylstyrene to 3 vinyltoluene may be
safely used as components of polyolefin film intended for use in contact
with food, subject to the following provisions:
(a) Hydrogenated [alpha]-methylstyrene-vinyltoluene copolymer resins
have a drop-softening point of 125[deg] to 165 [deg]C and a maximum
absorptivity of 0.17 liter per gram centimeter at 266 nanometers, as
determined by methods titled ``Determination of Softening Point (Drop
Method)'' and ``Determination of Unsaturation of Resin 1977,'' which are
incorporated by reference. Copies are available from the Center for Food
Safety and Applied Nutrition (HFS-200), Food and Drug Administration,
5100 Paint Branch Pkwy., College Park, MD 20740, or available for
inspection 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.
(b) The polyolefin film is produced from olefin polymers complying
with Sec. 177.1520 of this chapter, and the average thickness of the
film in the form in which it contacts food does not exceed 0.002 inch.
[42 FR 14609, Mar. 15, 1977, as amended at 47 FR 11847, Mar. 19, 1982;
54 FR 24898, June 12, 1989]
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