# Protection of Stratospheric Ozone: Listing of Substitutes for Ozone-Depleting Substances-Hydrocarbon Refrigerants
> **Rule** · Final rule. · Published 2011-12-20 · Effective 2012-02-21 · 76 FR 78832
## Document
- **Document number:** 2011-32175
- **Category:** air-emissions
- **Federal Register citation:** 76 FR 78832
- **CFR reference:** 40 CFR 82
- **Publication date:** 2011-12-20
- **Effective date:** 2012-02-21
- **EPA docket:** EPA-HQ-OAR-2009-0286
## Abstract

Pursuant to the U.S. Environmental Protection Agency (EPA)'s Significant New Alternatives Policy (SNAP) program, this action lists isobutane (R-600a) and R-441A as acceptable, subject to use conditions, as substitutes for chlorofluorocarbon (CFC)-12 and hydrochlorofluorocarbon (HCFC)-22 in household refrigerators, freezers, and combination refrigerators and freezers. This action also lists propane (R-290) as acceptable, subject to use conditions, as a substitute for CFC-12, HCFC-22, and R-502 in retail food refrigerators and freezers (stand-alone units only).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2011/12/20/2011-32175/protection-of-stratospheric-ozone-listing-of-substitutes-for-ozone-depleting-substances-hydrocarbon)
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