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HCFC |
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HCFC (organic chemistry) How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The stage for change was set by the 1987 Montreal Protocol on Substances that Deplete the Ozone Layer, which identified CFCs and HCFCs as ozone-depleting substances. has developed a technique that uses pure carbon dioxide, instead of CFCs and HCFCs, as the propellant, or blowing agent, in the manufacture of polystyrene foam. Developing countries, which have not had any HCFC controls before, agreed to a freeze for the year 2016 (on the basis of consumption levels in 2015) and to a phaseout as of 2040. |
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