[Code of Federal Regulations]
[Title 21, Volume 3]
[Revised as of April 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR178.3610]

[Page 401-402]
 
                        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 SANITIZERS--Table of Contents
 
            Subpart D--Certain Adjuvants and Production Aids
 
Sec. 178.3610  a-Methylstyrene-vinyltoluene resins, hydrogenated.

    Hydrogenated -methylstyrene-vinyltoluene copolymer resins 
having a molar ratio of 1 -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 -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 Office of the Federal Register, 800 
North Capitol Street, NW., suite 700, Washington, DC 20408.

[[Page 402]]

    (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]