For example, 30 percent of current carbon offset credits are paying for the capture and destruction of trifluoromethane (HFC-23), a greenhouse gas created as a byproduct of manufacturing refrigerant gases.    From Wordnik.com.  [NCPA | Daily Policy Digest] Reference

The substance HFC-23, or trifluoromethane, is a byproduct of chlorodifluoromethane, or HCFC-22, a refrigerant in air conditioners and refrigerators and a starting material for producing heat and chemical-resistant products, cables and coatings.    From Wordnik.com.  [EcoEarth.Info Environment RSS Newsfeed] Reference