Airgas Announces Fourth Quarter Earnings Release Schedule

Airgas, Inc. (NYSE: ARG) will release its fiscal 2012 fourth quarter earnings before the market opens on Thursday, May 3, 2012, and will host a teleconference at 10:00 a.m. ET that same day. The presentation materials will also be available before the market opens on May 3 on the Internet at http://investor.shareholder.com/arg/slides.cfm. A webcast of the teleconference will be available live and on demand through June 1 at http://investor.shareholder.com/arg/events.cfm.

The teleconference will be available by calling 888-587-0615 . A replay of the teleconference will be available through May 11. To listen, call 888-203-1112 and enter passcode 9254540.

About Airgas, Inc.

Airgas, Inc. (NYSE: ARG), through its subsidiaries, is the largest U.S. distributor of industrial, medical and specialty gases, and hardgoods, such as welding equipment and supplies. Airgas is also a leading U.S. producer of atmospheric gases, carbon dioxide, dry ice, and nitrous oxide, one of the largest U.S. distributors of safety products, and a leading U.S. distributor of refrigerants, ammonia products, and process chemicals. More than 14,000 employees work in approximately 1,100 locations, including branches, retail stores, gas fill plants, specialty gas labs, production facilities and distribution centers. Airgas also markets its products and services through eBusiness, catalog and telesales channels. Its national scale and strong local presence offer a competitive edge to its diversified customer base. For more information, please visit www.airgas.com.

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