Substitutes Subject to Use Restrictions and Unacceptable Substitutes Listed in the March 3, 1999, Final rule, Effective April 2, 1999

Refrigerants Unacceptable Substitutes End-use Substitute Decision Comments CFC-12, R-502, and HCFC-22 Household Refrigeration, Transport Refrigeration, Vending Machines, Cold Storage Warehouses, and Retail Food Refrigeration, Retrofit and New Self-Chilling Cans-Using HFC-134a or HFC-152a Unacceptable Unacceptably high greenhouse gas emissions from direct release of refrigerant to the atmosphere. [64 FR 10378, Mar. 3, 1999]