Washington, D. C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT ASTRUSTEE CHECKIF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2)

Exhibit 4.2

SECURITIES AND EXCHANGE COMMISSION

Washington, D. C. 20549

FORM T-1

STATEMENT OF ELIGIBILITY

UNDER THE TRUST INDENTURE ACT OF 1939 OF

A CORPORATION DESIGNATED TO ACT AS TRUSTEE

CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF

A TRUSTEE PURSUANT TO SECTION 305(b)(2)

JPMORGAN CHASE BANK, NATIONAL ASSOCIATION

(Exact name of trustee as specified in its charter)

Pauline E. Higgins

Vice President and Assistant General Counsel

JPMorgan Chase Bank, National Association

707 Travis Street, 4th Floor North

Houston, Texas 77002

Tel: (713)  ###-###-####

(Name, address and telephone number of agent for service)

OLIN CORPORATION

(Exact name of obligor as specified in its charter)

Debt Securities

(Title of the indenture securities)

GENERAL

Furnish the following information as to the trustee:

Comptroller of the Currency, Washington, D.C.

Board of Governors of the Federal Reserve System, Washington, D.C., 20551

Federal Deposit Insurance Corporation, Washington, D.C., 20429.

Yes.

If the obligor or any guarantor is an affiliate of the trustee, describe each such affiliation.

None.

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List below all exhibits filed as a part of this Statement of Eligibility.

1. A copy of the Articles of Association of JPMorgan Chase Bank, N.A. (see Exhibit 1 to Form T-1 filed in connection with Registration Statement No. 333-106575 which is incorporated by reference).

2. A copy of the Certificate of Authority of the Comptroller of the Currency for the trustee to commence business. (see Exhibit 2 to Form T-1 filed in connection with Registration Statement No. 333-106575 which is incorporated by reference).

3. None, the authority of the trustee to exercise corporate trust powers being contained in the documents described in Exhibits 1 and 2.

4. A copy of the existing By-Laws of the Trustee. (see Exhibit 4 to Form T-1 filed in connection with Registration Statement No. 333-106575 which is incorporated by reference).

5. Not applicable.

6. The consent of the Trustee required by Section 321(b) of the Act. (see Exhibit 6 to Form T-1 filed in connection with Registration Statement No. 333-106575 which is incorporated by reference).

7. A copy of the latest report of condition of the Trustee, published pursuant to law or the requirements of its supervising or examining authority.

8. Not applicable.

9. Not applicable.

SIGNATURE

Pursuant to the requirements of the Trust Indenture Act of 1939 the Trustee, JPMorgan Chase Bank, N.A., has duly caused this statement of eligibility to be signed on its behalf by the undersigned, thereunto duly authorized, all in the City of New York and State of New York, on the 26th day of June, 2006.

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Exhibit 7 to Form T-1

Bank Call Notice

RESERVE DISTRICT NO. 2

CONSOLIDATED REPORT OF CONDITION OF

JPMorgan Chase Bank, N.A.

of 1111 Polaris Parkway, Columbus, Ohio 43240

and Foreign and Domestic Subsidiaries,

a member of the Federal Reserve System,

at the close of business December 31, 2005, in

accordance with a call made by the Federal Reserve Bank of this

District pursuant to the provisions of the Federal Reserve Act.

I, Joseph L. Sclafani, E.V.P. & Controller of the above-named bank, do hereby declare that this Report of Condition has been prepared in conformance with the instructions issued by the appropriate Federal regulatory authority and is true to the best of my knowledge and belief.

JOSEPH L. SCLAFANI

We, the undersigned directors, attest to the correctness of this Report of Condition and declare that it has been examined by us, and to the best of our knowledge and belief has been prepared in conformance with the instructions issued by the appropriate Federal regulatory authority and is true and correct.