Montreal Protocol - London Amendment

Last updated: 26 June 2024

The Montreal Protocol on Substances that Deplete the Ozone Layer is a global agreement to protect the Earth’s ozone layer by phasing out the chemicals that deplete it. 

The 1990 London Amendment: 

  • Added fully halogenated CFCs, carbon tetrachloride, and methyl chloroform to the list of substances. 
  • Mandated the elimination of the production and consumption of CFCs, halons, and carbon tetrachloride by January 1st, 2000, and of methyl chloroform by January 1st, 2005. 
  • Banned trade in these substances with countries that are not Parties to the Protocol. 
  • Created a separate timetable of reductions for developing countries and established a special fund to help developing countries meet their obligations.

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