SF6 Reductions from Non-Electric and Non-Semiconductor Applications

This page last reviewed March 10, 2015

Sulfur hexafluoride is a potent greenhouse gas, with a global warming potential (GWP) of 23,900, the highest identified by the Intergovernmental Panel on Climate Change. On October 25, 2007, the California Air Resources Board (ARB) approved sulfur hexafluoride reductions from non-electric and non-semiconductor applications as an early action measure. Accordingly, ARB staff developed a measure to reduce sulfur hexafluoride emissions from other uses including magnesium die-casting, fume vent hood testing, tracer gas use, and other niche uses. Sulfur hexafluoride emissions from semiconductor manufacture and electric utilities are being examined separately. ARB approved the Regulation for Reducing Sulfur Hexafluoride Emissions in February 2009. 

On January 1, 2010, the regulation became effective. Restrictions on use and sale began January 1, 2011. Registration, reporting, and recordkeeping requirements became effective March 30, 2010. The reporting deadline is March 30 of each year, beginning in 2011.

What's New

Restrictions as of January 1, 2013
- In addition to the restrictions that had previously gone into effect, use of SF6 for Tracer Gas Testing, Magnesium Sand Casting, Magnesium Investment Casting, and Military Applications (other than Military Tracer Gas Array use) is no longer allowed in California, beginning January 1, 2013, without a valid exemption from ARB. Please review the regulation here.

The next sales reporting deadline is March 30, 2015 - Please fill in the reporting form and return via email attachment to wpotts@arb.ca.gov prior to the end of the day on March 30, 2015.


Form (spreadsheet) for use in reporting SF6 sales and distribution is available here.

Template for distributor registration letter is available here.

Template for research organization registration letter is available here.

Template for application for exemption is available here.

Past Events

Public Workshop to Develop Reporting Format for SF6 Distributors
   - December 1, 2010

Final Regulation was approved by Office of Administrative Law and became effective on January 1, 2010.

Registration, reporting, and recordkeeping requirements become effective March 30, 2010. 

Advisory:  Three-Month Grace Period for Distributors Subject to March 30, 2010 Deadline

Staff Report: Initial Statement of Reasons (ISOR) and Its Appendices

Past Workshops and Working Group Meetings on Mitigating Sulfur Hexafluoride (SF6) Emissions from Non-Utility and Non-Semiconductor Applications

Draft Concept Paper on Sulfur Hexafluoride (SF6) use in Non-Utility and Non-Semiconductor Applications