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Non-ozone Depleting Substances

Non-ozone depleting substances (ODS) do not deplete the earth’s protective ozone layer. Products that normally contain ozone depleting substances should be replaced with functionally similar products that contain non-ozone depleting substances. The Environmental Protection Agency (EPA) established standards regarding the use and disposal of ODS under the authority of Section 602(a) of the Clean Air Act.

Federal Acquisition Regulation (FAR) Part 23 pertains to ODS:

  • FAR 23.803 requires agencies to minimize procurement of ODS and to give preference to suitable, safe alternatives, and
  • FAR 23.804 requires the insertion of contract clauses regarding ODS and service of refrigeration equipment and air conditioners using ODS.

Executive Orders (EOs): EO 13514 [PDF - 113K] requires federal agencies to ensure that 95 percent of new contract actions, including task and delivery orders, for products and services are non-ozone depleting, where such products and services meet agency performance requirements.

EO 13423 implementing instructions include non-ODS in the components of the federal green purchasing program. These instructions also require agencies to maximize the use of safe alternatives to ODS, as approved by EPA’s Significant New Alternative Policy (SNAP) program. Visit EPA’s website to view a complete list of Class I ozone-depleting substances.  

Class I substances can be found in aerosols, foams, refrigerants, air conditioners, solvents, and fire extinguishers. Purchasing these products with substitute chemicals will ensure the agency is compliant with ODS requirements.

Find and Purchase

The EPA created the SNAP program to evaluate and regulate substitutes for ozone-depleting chemicals being phased out under the stratospheric ozone protection provisions of the Clean Air Act. SNAP has listed substitutes for certain product categories. Non-compliant options also remain available for purchase, so remember to make sure to request a non-ODS alternative when ordering. The category list below links to the EPA's List of Substitutes:



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Find information about the science of ozone depletion, EPA's regulatory approach to protecting the ozone layer, alternatives to ozone-depleting substances, and sun safety.

Significant New Alternative Policy (SNAP) Program

EPA's program to evaluate and regulate substitutes for the ozone-depleting chemicals that are being phased out under the stratospheric ozone protection provisions of the Clean Air Act (CAA).

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