Item 7.01. Regulation FD Disclosure

In accordance with General Instruction B.2. of Form 8-K, the following information shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Olin disclaims any intention or obligation to update or revise this information.

Attached as Exhibit 99.1 and incorporated herein by reference, is a copy of the Company's press release dated August 14, 2009, announcing pricing of its offering of $150 aggregate principal amount of Senior Notes (the "Senior Notes") that will mature on August 15, 2019. The Senior Notes will have an interest rate of 8.875% and will be issued at 99.19% of par value, providing a yield to maturity to investors of 9.0%. Interest will be paid semi-annually on the 15th day of February and August beginning February 15, 2010. The Senior Notes will be sold pursuant to Olin's shelf registration statement on file with the Securities and Exchange Commission. The managing underwriters and joint book-running managers for the transaction are Citi and Banc of America Securities LLC, and the co-manager is Wells Fargo Securities, LLC. Proceeds from the Senior Notes will be used to further strengthen the corporation's long term liquidity given uncertain economic times.

Item 9.01. Financial Statements and Exhibits

(d) Exhibit No. Exhibit
99.1 Press Release dated August 14, 2009.

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