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Class II Substance
A substance with an ozone depletion potential of less than 0.2. All HCFCs are currently included in this classification. (See Global warming potential.)
Source: Terms of the Environment ...
Warming Potential: The ratio of the warming caused by a substance to the warming caused by a similar mass of carbon dioxide. CFC-12, for example, has a GWP of 8,500, while water has a GWP of zero. (See: Class I Substance and Class II Substance.) ...
 See also: Global warming, Global warming potential, Carbon dioxide, Water, Treatment plant
  
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