According to a recent research published in the journal Nature, China continues to use ozone depleting CFC-11 in violation of Montreal Protocol.
CFC-11:
Name: Trichlorofluoromethane, also called freon-11, CFC-11, or R-11.
Properties: It is a colourless, faint ethereal, and sweetish-smelling liquid that boils around room temperature.
Ozone depletion: CFC-11 is one of a class of compounds called chlorofluorocarbons that destroy atmospheric ozone. They are also potent greenhouse gases that contribute to atmospheric warming.
Ban: It was the widely used as a refrigerant before it was included in the production moratorium agreed in the Montreal Protocol of 1987.
Impact of Ban: According to World Meteorological Organization (WMO), the hole in the ozone is on the path to recovery. Reduction in the atmospheric concentration of CFC-11 has made the second-largest contribution to the decline since the 1990s.
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