[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: 21CFR176.320]
[Page 235]
TITLE 21--FOOD AND DRUGS
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN
SERVICES (CONTINUED)
PART 176 INDIRECT FOOD ADDITIVES: PAPER AND PAPERBOARD COMPONENTS--Table
Subpart B Substances for Use Only as Components of Paper and Paperboard
Sec. 176.320 Sodium nitrate-urea complex.
Sodium nitrate-urea complex may be safely used as a component of
articles intended for use in producing, manufacturing, packing,
processing, preparing, treating, packaging, transporting, or holding
food, subject to the provisions of this section.
(a) Sodium nitrate-urea complex is a clathrate of approximately two
parts urea and one part sodium nitrate.
(b) Sodium nitrate-urea complex conforming to the limitations
prescribed in paragraph (b)(1) of this section is used as provided in
paragraph (b)(2) of this section.
(1) Limitations. (i) It is used as a plasticizer in glassine and
greaseproof paper.
(ii) The amount used does not exceed that required to accomplish its
intended technical effect or exceed 15 percent by weight of the finished
paper.
(2) Conditions of use. The glassine and greaseproof papers are used
for packaging dry food or as the food-contact surface for dry food.
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