21 C.F.R. § 178.3010 Adjuvant substances used in the manufacture of foamed plastics.
Title 21 - Food and Drugs
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]
Title 21: Food and Drugs
PART 178—INDIRECT FOOD ADDITIVES: ADJUVANTS, PRODUCTION AIDS, AND SANITIZERS
Subpart D—Certain Adjuvants and Production Aids
§ 178.3010 Adjuvant substances used in the manufacture of foamed plastics.
------------------------------------------------------------------------ List of substances Limitations------------------------------------------------------------------------Azodicarbonamide...................... For use as a blowing agent in polyethylene 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- For use as a blowing agent in 6). 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.------------------------------------------------------------------------
