Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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 *
SNEED PAULA A
   2. Issuer Name and Ticker or Trading Symbol
AIRGAS INC [ARG] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O AIRGAS, INC., 259 N. RADNOR-CHESTER ROAD, STE. 100		 3. Date of Earliest Transaction (Month/Day/Year)
06/30/2009
(Street)

RADNOR, PA 19087		 4. If Amendment, Date Original Filed(Month/Day/Year)
 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 Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (Right to Buy) $ 44.18 08/18/2009   A   7,000     (1) 08/18/2017 Common Stock 7,000 (2) 7,000 D  
Phantom Stock (3) (4) 06/30/2009   A   5.51     (5)   (5) Common Stock 5.51 $ 40.53 2,302.82 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
SNEED PAULA A
C/O AIRGAS, INC.
259 N. RADNOR-CHESTER ROAD, STE. 100
RADNOR, PA 19087		   X      

Signatures

 Robert H. Young, Jr., Attorney-in-Fact for Paula A. Sneed   08/20/2009
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(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) These options become exercisable in four equal increments of 25% on each of 8/18/2010, 8/18/2011, 8/18/2012 and 8/18/2013.
(2) Not applicable.
(3) Acquired pursuant to Airgas, Inc.'s deferred compensation plan as a result of the reinvestment under the plan of dividends declared and paid with respect to shares of Airgas, Inc.'s common stock underlying the phantom stock.
(4) Each share of phantom stock represents the right to receive the cash value of one share of Airgas, Inc. common stock.
(5) Shares of phantom stock are payable in cash following the reporting person's termination of service as a director with Airgas, Inc. The reporting person may transfer her phantom stock account into an alternative investment account under the plan at any time.

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