The Food and Drug Administration (FDA or the Agency) is proposing to amend its regulation (21 CFR 2.125) on uses of ozone-depleting substances (ODSs), including chlorofluorocarbons (CFCs), to remove designations for certain products as essential uses under the Clean Air Act. Essential-use products are exempt from FDA’s ban on the use of CFC propellants in FDA-regulated products and the Environmental Protection Agency’s (EPA’s) ban on the use of CFCs and other ODSs in pressurized dispensers. This action, if finalized, will remove essential use exemptions for sterile aerosol talc administered intrapleurally by thoracoscopy for human use, metered-dose atropine sulfate aerosol human drugs administered by oral inhalation, and anesthetic drugs for topical use on accessible mucous membranes of humans where a cannula is used for application. FDA is proposing this action because alternative products that do not use ODSs are now available and because these products are no longer being marketed in approved versions that contain ODSs. On June 29, 2015, FDA published a notice and request for comment concerning its tentative conclusion that these products are no longer an essential use under the Clean Air Act (80 FR 36937). The Agency received no comments concerning removal of essential use designations for sterile aerosol talc and metered-dose atropine sulfate, and is proposing to remove these designations by direct final rule and a companion proposed rule in the event adverse comments are received. FDA received one comment concerning removal of anesthetic drugs for topical use in response to its 2015 notice and request for comment, and is proposing to remove this exemption through a separate notice. Because these products are not currently sold in the approved form, no significant economic impact is anticipated.