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177.1830 Styrene-methyl methacrylate copolymers.

Home > Regulations > Indirect food additives: Polymers > 177.1830 Styrene-methyl methacrylate copolymers.



[Code of Federal Regulations]
[Title 21, Volume 3]
[Revised as of April 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR177.1830]

[Page 321-322]
 
                        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.  177.1830  Styrene-methyl methacrylate copolymers.

    Styrene-methyl methacrylate copolymers identified in this section 
may be safely used as components of plastic articles intended for use in 
contact with food, subject to the provisions of this section.
    (a) For the purpose of this section, styrene-methyl methacrylate 
copolymers consist of basic copolymers produced by the copolymerization 
of styrene and methyl methacrylate such that the finished basic 
copolymers contain more than 50 weight percent of polymer units derived 
from styrene.
    (b) The finished plastic food-contact article, when extracted with 
the solvent or solvents characterizing the

[[Page 322]]

type of food and under the conditions of time and temperature 
characterizing the conditions of intended use as determined from tables 
1 and 2 of Sec.  176.170(c) of this chapter, yields extractives not to 
exceed the following when tested by the methods prescribed in Sec.  
177.1010(c);
    (1) Total nonvolatile extractives not to exceed 0.3 milligram per 
square inch of surface tested.
    (2) Potassium permanganate oxidizable distilled water and 8 and 50 
percent alcohol extractives not to exceed an absorbance of 0.15.
    (3) Ultraviolet-absorbing distilled water and 8 and 50 percent 
alcohol extractives not to exceed an absorbance of 0.30.
    (4) Ultraviolet-absorbing n-heptane extractives not to exceed an 
absorbance of 0.40.





Additives that reference this regulation:


Source: U.S. Code of Federal Regulations - CFR Title 21, Part 177, Section 1830


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