[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: 21CFR177.1900]
[Page 323]
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. 177.1900 Urea-formaldehyde resins in molded articles.
Urea-formaldehyde resins may be safely used as the food-contact
surface of molded articles intended for use in contact with food, in
accordance with the following prescribed conditions:
(a) For the purpose of this section, urea-formaldehyde resins are
those produced when 1 mole of urea is made to react with not more than 2
moles of formaldehyde in water solution.
(b) The resins may be mixed with refined wood pulp and the mixture
may contain other optional adjuvant substances which may include the
following:
------------------------------------------------------------------------
List of substances Limitations
------------------------------------------------------------------------
Hexamethylenetetramine.................... For use only as
polymerization-control
agent.
Tetrachlorophthalic acid anhydride........ Do.
Zinc stearate............................. For use as lubricant.
------------------------------------------------------------------------
(c) The finished food-contact article, 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. 175.300(d) of
this chapter, yields total extractives in each extracting solvent not to
exceed 0.5 milligram per square inch of food-contact surface as
determined by the methods described in Sec. 175.300(e) of this chapter.
Note: In testing the finished food-contact article, use a separate
test sample for each required extracting solvent.
[[Page 324]]
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