§176.320 硝酸�?脲复合物(Sodium nitrate-urea complex)

　　��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.

　　�?� 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.

　　�?� Conditions of use. The glassine and greaseproof papers are used for packaging dry food or as the food-contact surface for dry food.