LIMITED POWER OF ATTORNEY

For Airgas, Inc. Section 16(a) Filings



Know all men by these presents, that the undersigned hereby constitutes

and appoints each of Robert H. Young, Jr., Mariette J. Mooyman, and

Robert F. Hecht, or any of them, her true and lawful attorney-in-fact

to:



(1) prepare, execute and file with the United States Securities and

Exchange Commission, any stock exchange and Airgas, Inc. (the

"Company") for and on behalf of the undersigned, in the undersigned's

capacity as an officer and/or director of the Company, Forms 3, 4 and

5 and amendments thereto in accordance with Section 16(a) of the

Securities Exchange Act of 1934 and the rules thereunder (the

"Exchange Act");



(2) obtain, for and on behalf of the undersigned, information from the

undersigned's brokers regarding transactions by the undersigned in the

Company's securities as may be necessary or desirable to prepare Forms

3, 4 and 5 on behalf of the undersigned; and



(3) perform any and all other acts which, in the discretion of such

attorney-in-fact, may be necessary or desirable in connection with

the foregoing authority, it being understood that the documents

executed by such attorney-in-fact on behalf of the undersigned pursuant

to this Limited Power of Attorney shall be in such form and shall

contain such terms and conditions as such attorney-in-fact may approve

in his/her discretion.



The undersigned hereby grants to each such attorney-in-fact full power

and authority to do and perform any and every act and thing whatsoever

requisite, necessary or appropriate to be done in the exercise of any

of the rights and powers herein granted, as fully to all intents and

purposes as the undersigned might or could do if personally present,

hereby ratifying and confirming all that such attorney-in-fact shall

lawfully do or cause to be done by virtue of this Limited Power of

Attorney. The undersigned acknowledges that: (i) this Limited Power

of Attorney authorizes each of the foregoing attorneys-in-fact to act

in his/her discretion in preparing Forms 3, 4 and 5 on information

provided to such attorney-in-fact without independent verification of

such information; (ii) the foregoing attorneys-in-fact, in serving in

such capacity at the request of the undersigned, are not assuming, nor

is the Company assuming, any of the undersigned's responsibilities

under the Exchange Act, including to comply with Section 16 of the

Exchange Act; and (iii) neither the attorneys-in-fact nor the Company

is assuming any liability for the undersigned's responsibility to

comply with the requirements of the Exchange Act or any obligation or

liability of the undersigned for profit disgorgement under

Section 16(b) of the Exchange Act;



This Power of Attorney shall remain in full force and effect until the

undersigned is no longer required to file Forms 3, 4 and 5 with respect

to the undersigned's holdings of and transactions in securities issued

by the Company, unless earlier revoked by the undersigned in a signed

writing delivered to the foregoing attorneys-in-fact.



IN WITNESS WHEREOF, the undersigned has caused this Limited Power of

Attorney to be executed as of this 14th day of August, 2015.



Signature

/s/ Nicole L. Kahny

___________________________



Print Name

R. Nicole L. Kahny

___________________________