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177.2210 Ethylene polymer, chloro&chyph;sulfonated.

Home > Regulations > Indirect food additives: Polymers > 177.2210 Ethylene polymer, chloro&chyph;sulfonated.



[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: 21CFR177.2210]

[Page 332]
 
                        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 C_Substances for Use Only as Components of Articles Intended for 
                              Repeated Use
 
Sec.  177.2210  Ethylene polymer, chloro sulfonated.


    Ethylene polymer, chlorosulfonated as identified in this section may 
be safely used as an article or component of articles intended for use 
in contact with food, subject to the provisions of this section.
    (a) Ethylene polymer, chloro sulfonated is produced by chloro 
sulfonation of a carbon tetrachloride solution of polyethylene with 
chlorine and sulfuryl chloride.
    (b) Ethylene polymer, chloro sulfonated shall meet the following 
specifications:
    (1) Chlorine not to exceed 25 percent by weight.
    (2) Sulfur not to exceed 1.15 percent by weight.
    (3) Molecular weight is in the range of 95,000 to 125,000.


Methods for the specifications in this paragraph (b), titled ``Chlorine 
and Bromine--Coulometric Titration Method by Aminco Chloridometer,'' 
``Hypolon [reg] Synthetic Rubber--Determination of Sulfur by 
Parr Bomb,'' and ASTM method D2857-70 (Reapproved 1977), ``Standard Test 
Method for Dilute Solution Viscosity of Polymers,'' are incorporated by 
reference. Copies of the ASTM method may be obtained from the American 
Society for Testing Materials, 100 Barr Harbor Dr., West Conshohocken, 
Philadelphia, PA 19428-2959. Copies of the other two methods 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. Copies of all three methods may be examined 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.
    (c) The additive is used as the article, or a component of articles, 
intended for use as liners and covers for reservoirs intended for the 
storage of water for drinking purposes.
    (d) Substances permitted by Sec.  177.2600 may be employed in the 
preparation of ethylene polymers, chlorosulfonated, subject to any 
limitations prescribed therein.
    (e) The finished ethylene copolymers, chlorosulfonated shall conform 
to Sec.  177.2600(e) and (g).

[42 FR 14572, Mar. 15, 1977, as amended at 49 FR 10111, Mar. 19, 1984; 
54 FR 24898, June 12, 1989]





Additives that reference this regulation:


Source: U.S. Code of Federal Regulations - CFR Title 21, Part 177, Section 2210


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