The July, 1990 rule required producers of  (chlorofluorocarbons (CFCs), halons, carbon tetrachloride, and methyl chloroform) to gradually reduce their production of these chemicals and to phase them out completely as of January 1, 2000 (2002 for methyl chloroform). That section limits the production and consumption of a set of chemicals known to deplete the stratospheric ozone layer. In addition to these production limits, the rule required a similar reduction in consumption, defined as production plus imports minus exports.

On February 11, 1992, the United States, responding to recent scientific findings, announced that the phaseout of the production of CFCs, halons, carbon tetrachloride, and methyl chloroform would be accelerated and that these substances would be phased out by December, 31, 1995.