FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person *   Jones Douglas L. 2. Date of Event Requiring Statement (Month/Day/Year) 04/22/2013 3. Issuer Name and Ticker or Trading Symbol AIRGAS INC [ARG] (Last) (First) (Middle) C/O AIRGAS, INC., 259 N. RADNOR-CHESTER ROAD, SUITE 100 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Division President - West 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) RADNOR, PA 19087 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 1,598 (1) D Â

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Phantom Stock (2)	  (3)	  (3)	Common Stock	203.9 (4)	$ (5)	D	Â
Stock Option (Right to Buy)	  (6)	05/25/2014	Common Stock	2,000	$ 23.91	D	Â
Stock Option (Right to Buy)	  (7)	05/24/2015	Common Stock	2,500	$ 25.97	D	Â
Stock Option (Right to Buy)	  (8)	05/23/2014	Common Stock	4,000	$ 36.17	D	Â
Stock Option (Right to Buy)	  (9)	05/08/2015	Common Stock	2,900	$ 43.62	D	Â
Stock Option (Right to Buy)	  (10)	05/20/2016	Common Stock	4,000	$ 60.84	D	Â
Stock Option (Right to Buy)	  (11)	05/19/2017	Common Stock	10,400	$ 43.06	D	Â
Stock Option (Right to Buy)	  (12)	05/25/2018	Common Stock	7,200	$ 62.23	D	Â
Stock Option (Right to Buy)	  (13)	05/17/2019	Common Stock	6,500	$ 66.5	D	Â
Stock Option (Right to Buy)	  (14)	05/08/2020	Common Stock	6,200	$ 91.92	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Jones Douglas L. C/O AIRGAS, INC. 259 N. RADNOR-CHESTER ROAD, SUITE 100 RADNOR, PA 19087	Â	Â	  Division President - West	Â

Signatures

Douglas L. Jones		05/01/2013
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Includes 1,598 shares of Airgas, Inc. common stock acquired pursuant to Airgas, Inc.'s Employee Stock Purchase Plan ("ESPP") as of 4/22/2013, the date of the latest available statement of the reporting person's ESPP holdings.
(2)	Acquired pursuant to Airgas, Inc.'s deferred compensation plan as a result of the deferral by the reporting person of a portion of his compensation.
(3)	Shares of phantom stock are payable in cash following the reporting person's termination of service as an officer or director with Airgas, Inc. or as determined by the reporting person in accordance with the terms and conditions of the plan. The reporting person may transfer his phantom stock account into an alternative investment account under the plan at any time.
(4)	Determined based on the dollar value of the reporting person's deferred compensation plan account and the closing price per share of Airgas, Inc. common stock on the date of the transaction.
(5)	Each share of phantom stock represents the right to receive the cash value of one share of Airgas, Inc. common stock.
(6)	These options became exercisable in 25% equal increments on each of 5/25/2005, 5/25/2006, 5/25/2007 and 5/25/2008.
(7)	These options became exercisable in 25% equal increments on each of 5/24/2006, 5/24/2007, 5/24/2008 and 5/8/2009.
(8)	These options became exercisable in 25% equal increments on each of 5/23/2007, 5/23/2008, 5/23/2009 and 5/23/2010.
(9)	These options became exercisable in 25% equal increments on each of 5/8/2008, 5/8/2009, 5/8/2010 and 5/8/2011.
(10)	These options became exercisable in 25% equal increments on each of 5/20/2009, 5/20/2010, 5/20/2011 and 5/20/2012.
(11)	These options have or will become exercisable, as applicable, in 25% equal increments on each of 5/19/2010, 5/19/2011, 5/19/2012 and 5/19/2013.
(12)	These options have or will become exercisable, as applicable, in 25% equal increments on each of 5/25/2011, 5/25/2012, 5/25/2013 and 5/25/2014.
(13)	These options have or will become exercisable, as applicable, in 25% equal increments on each of 5/17/2012, 5/17/2013, 5/17/2014 and 5/17/2015.
(14)	These options will become exercisable in 25% equal increments on each of 5/8/2013, 5/8/2014, 5/8/2015 and 5/8/2016.

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