REGISTRATION RIGHTS AGREEMENT

Exhibit 4.2

REGISTRATION RIGHTS AGREEMENT

Airgas, Inc.,
the Guarantors party hereto

and

Banc of America Securities LLC
Goldman, Sachs & Co.
JPMorgan Securities Inc.
BNY Mellon Capital Markets, LLC
BB&T Capital Markets, a division of Scott & Stringfellow, Inc.
Barclays Capital Inc.
Wachovia Capital Markets, LLC
Mitsubishi UFJ Securities International plc
Calyon Securities (USA) Inc.
PNC Capital Markets LLC
Scotia Capital USA Inc.
Mizuho Securities USA Inc.
NatCity Investments, Inc.
Daiwa Securities America Inc.
SunTrust Robinson Humphrey, Inc.
Greenwich Capital Markets, Inc.

Dated as of June 10, 2008

REGISTRATION RIGHTS AGREEMENT

     This Registration Rights Agreement (this “Agreement”) is made and entered into as of June 10, 2008, by and among Airgas, Inc., a Delaware corporation (the “Company”), the guarantors listed on Schedule I hereto (collectively, the “Guarantors”), and the several initial purchasers listed on Schedule II hereto (collectively, the “Initial Purchasers”), each of whom has agreed to purchase the Company’s 7.125% Senior Subordinated Notes due 2018 (the “Notes”), which are fully and unconditionally guaranteed by the Guarantors (the “Guarantees”), pursuant to the Purchase Agreement (as defined below). The Notes and the Guarantees attached thereto are herein collectively referred to as the “Securities.”

     This Agreement is made pursuant to the Purchase Agreement, dated June 5, 2008 (the “Purchase Agreement”), among the Company, the Guarantors and the Initial Purchasers (i) for the benefit of the Initial Purchasers and (ii) for the benefit of the holders from time to time of Transfer Restricted Securities, including the Initial Purchasers. In order to induce the Initial Purchasers to purchase the Securities, the Company has agreed to provide the registration rights set forth in this Agreement. The execution and delivery of this Agreement is a condition to the obligations of the Initial Purchasers set forth in Section 5(j) of the Purchase Agreement.

     The parties hereby agree as follows:

     SECTION 1. Definitions. As used in this Agreement, the following capitalized terms shall have the following meanings:

      Additional Interest: As defined in Section 5 hereof.

      Advice: As defined in Section 6(c) hereof.

      Broker-Dealer: Any broker or dealer registered under the Exchange Act.

      Business Day: Any day other than a Saturday, Sunday or U.S. federal holiday or a day on which banking institutions or trust companies located in New York, New York are authorized or obligated to be closed.

      Closing Date: The date of this Agreement.

      Commission: The Securities and Exchange Commission.

      Company : As defined in the preamble hereto.

      Consummate: A registered Exchange Offer shall be deemed “Consummated” for purposes of this Agreement upon the occurrence of (i) the filing and effectiveness under the Securities Act of the Exchange Offer Registration Statement relating to the Exchange Securities to be issued in the Exchange Offer, (ii) the maintenance of such Registration Statement continuously effective and the keeping of the Exchange Offer open for a period not less than the minimum period required pursuant to Section 3(b) hereof, and (iii) the delivery by the Company to the Registrar under the Indenture of Exchange Securities in the same aggregate principal amount as the

aggregate principal amount of Transfer Restricted Securities that were tendered by Holders thereof pursuant to the Exchange Offer.

      Exchange Act: The Securities Exchange Act of 1934, as amended.

      Exchange Date: As defined in Section 3(a) hereto.

      Exchange Offer: The registration by the Company under the Securities Act of the Exchange Securities pursuant to a Registration Statement pursuant to which the Company offers the Holders of all outstanding Transfer Restricted Securities the opportunity to exchange all such outstanding Transfer Restricted Securities held by such Holders for Exchange Securities in an aggregate principal amount equal to the aggregate principal amount of the Transfer Restricted Securities tendered in such exchange offer by such Holders.

      Exchange Offer Registration Statement: The Registration Statement relating to the Exchange Offer, including the related Prospectus.

      Exchange Securities: The 7.125 % Senior Subordinated Notes due 2018, of the same series under the Indenture as the Notes and the Guarantees attached thereto, to be issued to Holders in exchange for Transfer Restricted Securities pursuant to this Agreement.

      FINRA: Financial Industry Regulatory Authority, Inc.

      Freely Tradable: Means, with respect to a Security, a Security that at any time of determination (i) may be sold to the public in accordance with Rule 144 under the Securities Act (“Rule 144”) by a person that is not an “affiliate” (as defined in Rule 144 under the Securities Act) of the Company where no conditions of Rule 144 are then applicable (other than the holding period requirement in paragraph (d)(1)(ii) of Rule 144 so long as such holding period requirement is satisfied at such time of determination) and (ii) does not bear any restrictive legends relating to the Securities Act.

      Guarantees : As defined in the preamble hereto.

      Guarantors : As defined in the preamble hereto.

      Holder: As defined in Section 2(b) hereof.

      Indemnified Holder: As defined in Section 8(a) hereof.

      Indenture: The Indenture, dated as of June 10, 2008, by and among the Company, the Guarantors and The Bank of New York, as trustee (the “Trustee”), pursuant to which the Securities are to be issued, as such Indenture is amended or supplemented from time to time in accordance with the terms thereof.

      Initial Purchasers: As defined in the preamble hereto.

      Initial Placement: The issuance and sale by the Company of the Securities to the Initial Purchasers pursuant to the Purchase Agreement.

      Notes : As defined in the preamble hereto.

      Person: An individual, partnership, corporation, trust or unincorporated organization, or a government or agency or political subdivision thereof.

      Prospectus: The prospectus included in a Registration Statement, as amended or supplemented by any prospectus supplement and by all other amendments thereto, including post-effective amendments, and all material incorporated by reference into such Prospectus.

      Registration Default: As defined in Section 5 hereof.

      Registration Statement: Any registration statement of the Company relating to (a) an offering of Exchange Securities pursuant to an Exchange Offer or (b) the registration for resale of Transfer Restricted Securities pursuant to the Shelf Registration Statement, which is filed pursuant to the provisions of this Agreement, in each case, including the Prospectus included therein, all amendments and supplements thereto (including post-effective amendments) and all exhibits and material incorporated by reference therein.

      Securities: As defined in the preamble hereto.

      Securities Act: The Securities Act of 1933, as amended.

      Shelf Filing Deadline: As defined in Section 4(a) hereof.

      Shelf Registration Statement: As defined in Section 4(a) hereof.

      Transfer Restricted Securities: The Securities; provided that the Securities shall cease to be Transfer Restricted Securities on the earliest to occur of (i) the date on which a Registration Statement with respect to such Securities has become effective under the Securities Act and such Securities have been exchanged or disposed of pursuant to such Registration Statement, (ii) the date on which such Securities cease to be outstanding or (iii) the date on which such Securities are Freely Tradable.

      Trust Indenture Act: The Trust Indenture Act of 1939, as amended.

      Underwritten Registration or Underwritten Offering: A registration in which securities of the Company are sold to an underwriter for reoffering to the public.

SECTION 2. Securities Subject to this Agreement .

     (a)  Transfer Restricted Securities. The securities entitled to the benefits of this Agreement are the Transfer Restricted Securities.

     (b)  Holders of Transfer Restricted Securities. A Person is deemed to be a holder of Transfer Restricted Securities (each, a “Holder”) whenever such Person owns Transfer Restricted Securities.

SECTION 3. Registered Exchange Offer .

     (a) Unless the Exchange Offer shall not be permissible under applicable law or Commission policy (after the procedures set forth in Section 6(a) hereof have been complied with), or there are no Transfer Restricted Securities outstanding, each of the Company and the Guarantors shall (i) cause to be filed with the Commission, a Registration Statement under the Securities Act relating to the Exchange Securities and the Exchange Offer, (ii) use its reasonable best efforts to cause such Registration Statement to become effective, (iii) in connection with the foregoing, file (A) all pre-effective amendments to such Registration Statement as may be necessary in order to cause such Registration Statement to become effective, (B) if applicable, a post-effective amendment to such Registration Statement pursuant to Rule 430A under the Securities Act and (C) cause all necessary filings in connection with the registration and qualification of the Exchange Securities to be made under the state securities or blue sky laws of such jurisdictions as are necessary to permit Consummation of the Exchange Offer, and (iv) upon the effectiveness of such Registration Statement, commence the Exchange Offer. Each of the Company and the Guarantors shall use its reasonable best efforts to Consummate the Exchange Offer not later than 365 days following the Closing Date (or if such 365th day is not a Business Day, the next succeeding Business Day) (the “Exchange Date”); provided , however , that (x) the Company and the Guarantors shall not be required to Consummate such Exchange Offer if all of the Securities are Freely Tradable on or before the Exchange Date and (y) if the Company believes in good faith that the Securities will be Freely Tradable by the Exchange Date, then it shall not be obligated to file the Registration Statement referred to in clause (i) above prior to the Exchange Date. The Exchange Offer, if required pursuant to this Section 3(a), shall be on the appropriate form permitting registration of the Exchange Securities to be offered in exchange for the Transfer Restricted Securities and to permit resales of Transfer Restricted Securities held by Broker-Dealers as contemplated by Section 3(c) hereof.

     (b) If an Exchange Offer Registration Statement is required to be filed and declared effective pursuant to Section 3(a) above, the Company and the Guarantors shall cause the Exchange Offer Registration Statement to be effective continuously and shall keep the Exchange Offer open for a period of not less than the minimum period required under applicable federal and state securities laws to Consummate the Exchange Offer; provided, however , that in no event shall such period be less than 20 Business Days after the date notice of the Exchange Offer is mailed to the Holders. The Company shall cause the Exchange Offer to comply with all applicable federal and state securities laws. No securities other than the Exchange Securities shall be included in the Exchange Offer Registration Statement. The Company shall use its reasonable best efforts to cause the Exchange Offer to be Consummated by the Exchange Date; provided , however , that the Company and the Guarantors shall not be required to Consummate the Exchange Offer if all of the Securities are Freely Tradable on or before the Exchange Date.

     (c) The Company shall indicate in a “Plan of Distribution” section contained in the Prospectus forming a part of the Exchange Offer Registration Statement that any Broker-Dealer who holds Transfer Restricted Securities that were acquired for its own account as a result of market-making activities or other trading activities (other than Transfer Restricted Securities acquired directly from the Company), may exchange such Transfer Restricted Securities pursuant to the Exchange Offer; however, such Broker-Dealer may be deemed to be an “underwriter”

within the meaning of the Securities Act and must, therefore, deliver a prospectus meeting the requirements of the Securities Act in connection with any resales of the Exchange Securities received by such Broker-Dealer in the Exchange Offer, which prospectus delivery requirement may be satisfied by the delivery by such Broker-Dealer of the Prospectus contained in the Exchange Offer Registration Statement. Such “Plan of Distribution” section shall also contain all other information with respect to such resales by Broker-Dealers that the Commission may require in order to permit such resales pursuant thereto, but such “Plan of Distribution” shall not name any such Broker-Dealer or disclose the amount of Transfer Restricted Securities held by any such Broker-Dealer except to the extent required by the Commission as a result of a change in policy after the date of this Agreement.

     Each of the Company and the Guarantors shall use its reasonable best efforts to keep the Exchange Offer Registration Statement continuously effective, supplemented and amended as required by the provisions of Section 6(c) hereof to the extent necessary to ensure that it is available for resales of Transfer Restricted Securities acquired by Broker-Dealers for their own accounts as a result of market-making activities or other trading activities, and to ensure that it conforms with the requirements of this Agreement, the Securities Act and the policies, rules and regulations of the Commission as announced from time to time, for a period ending on the earlier of (i) 180 days from the date on which the Exchange Offer Registration Statement is declared effective and (ii) the date on which a Broker-Dealer is no longer required to deliver a prospectus in connection with market-making or other trading activities.

     The Company shall provide sufficient copies of the latest version of such Prospectus to Broker-Dealers promptly upon request at any time during such 180-day (or shorter as provided in the foregoing sentence) period in order to facilitate such resales.

     Notwithstanding anything in this Section 3 to the contrary, (x) the requirements to Consummate the Exchange Offer shall terminate at such time as all the Securities are Freely Tradable and (y) if the Company believes in good faith that the Securities will be Freely Tradable on or prior to the Exchange Date, then it shall not be obligated to file the Registration Statement referred to in Section 3(a) above prior to the Exchange Date.

SECTION 4. Shelf Registration .

     (a)  Shelf Registration. If (i) the Company is not required to file an Exchange Offer Registration Statement or to consummate the Exchange Offer solely because the Exchange Offer is not permitted by applicable law or Commission policy (after the procedures set forth in Section 6(a) hereof have been complied with), (ii) for any reason the Exchange Offer is not Consummated by the Exchange Date and the Securities are not all Freely Tradable prior to such time, or (iii) prior to the Exchange Date: (A) the Initial Purchasers request from the Company with respect to Transfer Restricted Securities not eligible to be exchanged for Exchange Securities in the Exchange Offer, (B) with respect to any Holder of Transfer Restricted Securities such Holder notifies the Company that (i) such Holder is prohibited by applicable law or Commission policy from participating in the Exchange Offer, (ii) such Holder may not resell the Exchange Securities acquired by it in the Exchange Offer to the public without delivering a prospectus and that the Prospectus contained in the Exchange Offer Registration Statement is not appropriate or available for such resales by such Holder, or (iii) such Holder is a Broker-Dealer and holds Transfer

Restricted Securities acquired directly from the Company or one of its affiliates or (C) in the case of any Initial Purchaser, such Initial Purchaser notifies the Company it will not receive Freely Tradable Exchange Securities in exchange for Transfer Restricted Securities constituting any portion of such Initial Purchaser’s unsold allotment, the Company and the Guarantors shall

     (x) cause to be filed a shelf registration statement pursuant to Rule 415 under the Securities Act, which may be an amendment to the Exchange Offer Registration Statement (in either event, the “Shelf Registration Statement”) as promptly as practicable after the date such obligation arises but no earlier than the 365th day after the Closing Date (or if such 365th day is not a Business Day, the next succeeding Business Day) (such date being the “Shelf Filing Deadline”), which Shelf Registration Statement shall provide for resales of all Transfer Restricted Securities the Holders of which shall have provided the information required pursuant to Section 4(b) hereof; and

     (y) use their reasonable best efforts to cause such Shelf Registration Statement to be declared effective by the Commission on or before the 30th day after the Shelf Filing Deadline (or if such 30th day is not a Business Day, the next succeeding Business Day).

     Each of the Company and the Guarantors shall use its reasonable best efforts to keep such Shelf Registration Statement continuously effective, supplemented and amended as required by the provisions of Sections 6(b) and (c) hereof to the extent necessary to ensure that it is available for resales of Transfer Restricted Securities by the Holders of such Securities entitled to the benefit of this Section 4(a), and to ensure that it conforms with the requirements of this Agreement, the Securities Act and the policies, rules and regulations of the Commission as announced from time to time, from the date on which the Shelf Registration Statement is declared effective by the Commission until the earlier of the first anniversary of the effective date of the Shelf Registration Statement and the date all Transfer Restricted Securities covered by the Shelf Registration Statement have either been sold as contemplated in the Shelf Registration Statement or become Freely Tradable. Notwithstanding anything to the contrary, the requirements to file a Shelf Registration Statement and to have such Shelf Registration Statement become effective and remain effective shall terminate at such time as all of the Securities are Freely Tradable.

     (b)  Provision by Holders of Certain Information in Connection with the Shelf Registration Statement. No Holder of Transfer Restricted Securities may include any of its Transfer Restricted Securities in any Shelf Registration Statement pursuant to this Agreement unless and until such Holder furnishes to the Company in writing, within 20 Business Days after receipt of a request therefor, such information as the Company may reasonably request for use in connection with any Shelf Registration Statement or Prospectus or preliminary Prospectus included therein. Each Holder as to which any Shelf Registration Statement is being effected agrees to furnish promptly to the Company all information required to be disclosed in order to make the information previously furnished to the Company by such Holder not materially misleading.

     SECTION 5. Additional Interest. If any of the Securities are not Freely Tradable Securities by the date that is 30 days following the Exchange Date and either (i) the Exchange Offer has not been Consummated by such date, (ii) any Shelf Registration Statement, if required hereby, has not been declared effective by the Commission by such date or (iii) any Registration

Statement required by this Agreement has been declared effective but ceases to be effective at any time at which it is required to be effective under this Agreement (each such event referred to in clauses (i) through (iii), a “Registration Default”), the Company hereby agrees that the interest rate borne by the Transfer Restricted Securities shall be increased by 0.25% per annum during the 90-day period immediately following the occurrence of any Registration Default and shall increase by 0.25% per annum at the end of each subsequent 90-day period (such increase, “Additional Interest”), but in no event shall such increase exceed 1.00% per annum. At the earlier of (i) the cure of all Registration Defaults relating to the particular Transfer Restricted Securities or (ii) the particular Transfer Restricted Securities having become Freely Tradable, the interest rate borne by the relevant Transfer Restricted Securities will be reduced to the original interest rate borne by such Transfer Restricted Securities; provided, however, that, if after any such reduction in interest rate due to the cure of a Registration Default, a different Registration Default occurs, the interest rate borne by the relevant Transfer Restricted Securities shall again be increased pursuant to the foregoing provisions.

     All obligations of the Company and the Guarantors set forth in the preceding paragraph that are outstanding with respect to any Transfer Restricted Security at the time such security ceases to be a Transfer Restricted Security shall survive until such time as all such obligations with respect to such security shall have been satisfied in full.

SECTION 6. Registration Procedures .

     (a)  Exchange Offer Registration Statement. In connection with the Exchange Offer, if required pursuant to Section 3(a) hereof, the Company and the Guarantors shall comply with all of the provisions of Section 6(c) hereof, shall use their reasonable best efforts to effect such exchange to permit the sale of Transfer Restricted Securities being sold in accordance with the intended method or methods of distribution thereof, and shall comply with all of the following provisions:

     (i) If in the reasonable opinion of counsel to the Company there is a question as to whether the Exchange Offer is permitted by applicable law, each of the Company and the Guarantors hereby agrees to seek a no-action letter or other favorable decision from the Commission allowing the Company and the Guarantors to Consummate an Exchange Offer for such Transfer Restricted Securities. Each of the Company and the Guarantors hereby agrees to pursue the issuance of such a decision to the Commission staff level but shall not be required to take commercially unreasonable action to effect a change of Commission policy. Each of the Company and the Guarantors hereby agrees, however, to (A) participate in telephonic conferences with the Commission, (B) deliver to the Commission staff an analysis prepared by counsel to the Company setting forth the legal bases, if any, upon which such counsel has concluded that such an Exchange Offer should be permitted and (C) diligently pursue a favorable resolution by the Commission staff of such submission.

     (ii) As a condition to its participation in the Exchange Offer pursuant to the terms of this Agreement, each Holder of Transfer Restricted Securities shall furnish, upon the request of the Company, prior to the Consummation thereof, a written representation to the Company (which may be contained in the letter of transmittal contemplated by the

Exchange Offer Registration Statement) to the effect that (A) it is not an affiliate of the Company, (B) it is not engaged in, and does not intend to engage in, and has no arrangement or understanding with any Person to participate in, a distribution of the Exchange Securities to be issued in the Exchange Offer and (C) it is acquiring the Exchange Securities in its ordinary course of business. In addition, all such Holders of Transfer Restricted Securities shall otherwise cooperate in the Company’s preparations for the Exchange Offer. Each Holder hereby acknowledges and agrees that any Broker-Dealer and any such Holder using the Exchange Offer to participate in a distribution of the securities to be acquired in the Exchange Offer (1) could not under Commission policy as in effect on the date of this Agreement rely on the position of the Commission enunciated in Morgan Stanley and Co., Inc. (available June 5, 1991) and Exxon Capital Holdings Corporation (available May 13, 1988), as interpreted in the Commission’s letter to Shearman & Sterling dated July 2, 1993, and similar no-action letters (which may include any no-action letter obtained pursuant to clause (i) above), and (2) must comply with the registration and prospectus delivery requirements of the Securities Act in connection with a secondary resale transaction and that such a secondary resale transaction should be covered by an effective registration statement containing the selling security holder information required by Item 507 or 508, as applicable, of Regulation S-K if the resales are of Exchange Securities obtained by such Holder in exchange for Transfer Restricted Securities acquired by such Holder directly from the Company.

     (b)  Shelf Registration Statement. If required pursuant to Section 4, in connection with the Shelf Registration Statement, each of the Company and the Guarantors shall comply with all the provisions of Section 6(c) hereof and shall use its reasonable best efforts to effect such registration to permit the sale of the Transfer Restricted Securities being sold in accordance with the intended method or methods of distribution thereof, and pursuant thereto each of the Company and the Guarantors will as expeditiously as possible prepare and file with the Commission a Registration Statement relating to the registration on any appropriate form under the Securities Act, which form shall be available for the sale of the Transfer Restricted Securities in accordance with the intended method or methods of distribution thereof.

     (c)  General Provisions. In connection with any Registration Statement and any Prospectus required by this Agreement to permit the sale or resale of Transfer Restricted Securities (including, without limitation, any Registration Statement and the related Prospectus required to permit resales of Transfer Restricted Securities by Broker-Dealers), each of the Company and the Guarantors shall:

     (i) use its reasonable best efforts to keep such Registration Statement continuously effective and provide all requisite financial statements (including, if required by the Securities Act or any regulation thereunder, financial statements of the Guarantors for the period specified in Section 3 or 4 hereof, as applicable; upon the occurrence of any event that would cause any such Registration Statement or the Prospectus contained therein (A) to contain a material misstatement or omission or (B) not to be effective and usable for resale of Transfer Restricted Securities during the period required by this Agreement, the Company shall file promptly an appropriate amendment to such Registration Statement, in the case of clause (A), correcting any such misstatement or omission,

and, in the case of either clause (A) or (B), use its best efforts to cause such amendment to be declared effective and such Registration Statement and the related Prospectus to become usable for their intended purpose(s) as soon as practicable thereafter;

     (ii) prepare and file with the Commission such amendments and post-effective amendments to the applicable Registration Statement as may be necessary to keep the Registration Statement effective for the applicable period set forth in Section 3 or 4 hereof, as applicable, or such shorter period as will terminate when all Transfer Restricted Securities covered by such Registration Statement have been sold or are Freely Tradable; cause the Prospectus to be supplemented by any required Prospectus supplement, and as so supplemented to be filed pursuant to Rule 424 under the Securities Act, and to comply fully with the applicable provisions of Rules 424 and 430A under the Securities Act in a timely manner; and comply with the provisions of the Securities Act with respect to the disposition of all securities covered by such Registration Statement during the applicable period in accordance with the intended method or methods of distribution by the sellers thereof set forth in such Registration Statement or supplement to the Prospectus;

     (iii) advise the underwriter(s), if any, and selling Holders promptly and, if requested by such Persons, to confirm such advice in writing, (A) when the Prospectus or any Prospectus supplement or post-effective amendment has been filed, and, with respect to any Registration Statement or any post-effective amendment thereto, when the same has become effective, (B)&nbs