December 15, 2011
In green chemistry news, the US Environmental Protection Agency yesterday issued a rule making 3 greener refrigeration gases legal. The new rule legalizes these hydrocarbons:
- the chemical R-441A
for use as refrigerants in appliances such as household refrigerators and in certain types of commercial refrigerators and freezers, typically smaller units.
In the ozone The newly-approved greener chemistry based refrigerants can replace:
- chlorofluorocarbon (CFC)-12
- hydrochlorofluorocarbon (HCFC)-22
Refrigerators and freezers in the U.S. also chill with hydrofluorocarbons, or HFCs. HFCs do not destroy the ozone layer like the older refrigerants do, but the HFCs in question are thousands of times more potent as greenhouse gases than carbon dioxide, pound for pound. This is why the rule comes from EPA's Clean Air Act as a pollution controlling measure.
For more information on using the newly approved, greener refrigeration gases, visit the EPA web site.