BBC News - Mysterious new man-made gases pose threat to ozone layer Interesting that despite being ID's we haven't figured out the source.
Quote:
The four new gases have been identified as CFC-112, CFC112a, CFC-113a, HCFC-133a CFC-113a has been listed as an "agrochemical intermediate for the manufacture of pyrethroids", a type of insecticide once widely used in agriculture CFC-113a and HCFC-133a are intermediaries in the production of widely used refrigerants CFC-112 and 112a may have been used in the production of solvents used to clean electrical components
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