发布单位：FDA
发布文号：58 FR 64895
发布日期：1993-12-10
生效日期：暂无
有效性状态： 
废止日期：暂无
备注：符合下列规定的条件下，下列物质可安全的用于接触食品的泡沫塑料制造中的辅料：偶氮甲酰胺，用做本章177.1520中所指的聚乙烯的发泡剂；1,1-二氟乙烷、正戊烷、异戊烷，用做聚苯乙烯的发泡剂；1,1,2,2-四氯乙烯、甲苯，限用于做聚苯乙烯中发泡剂的辅料。
§178.3010 Adjuvant substances used in the manufacture of foamed plastics
The following substances may be safely used as adjuvants in the manufacture of foamed plastics intended for use in contact with food, subject to any prescribed limitations:
[47 FR 22090, May 21, 1982, as amended at 58 FR 64895, Dec. 10, 1993]
The following substances may be safely used as adjuvants in the manufacture of foamed plastics intended for use in contact with food, subject to any prescribed limitations:
| List of substances | Limitations |
| Azodicarbonamide | For use as a blowing agent in pol-yethylene complying with item 2.1 in § 177.1520(c) of this chapter at a level not to exceed 5 percent by weight of finished foamed polyethylene. |
| 1,1-Difluoroethane (CAS Reg. No. 75-37-6) | For use as a blowing agent in polystyrene. |
| Isopentane | For use as a blowing agent in polystyrene. |
| n-Pentane | Do. |
| 1,1,2,2-Tetra-chloroethylene | For use only as a blowing agent adjuvant in polystyrene at a level not to exceed 0.3 percent by weight of finished foamed polystyrene intended for use in contact with food only of the types identified in § 176.170(c) of this chapter, table 1, under Categories I, II, VI, and VIII. |
| Toluene | For use only as a blowing agent adjuvant in polystyrene at a level not to exceed 0.35 percent by weight of finished foamed polystyrene. |
