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 Olin's press release dated August 9, 2012, announcing the pricing of its offering of $200 million in aggregate principal amount of Senior Notes due 2022 (the "Senior Notes"). The Senior Notes will mature on August 15, 2022, will have an interest rate of 5.50% per annum and will be issued at 100% of par value. Interest will be paid semi-annually on the 15th day of February and August, beginning February 15, 2013. 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 Merrill Lynch, Pierce, Fenner & Smith Incorporated, Citigroup Global Markets Inc. and Wells Fargo Securities, LLC. Proceeds from the Senior Notes are expected to be used to pay a portion of the purchase price for the acquisition of K. A. Steel Chemicals Inc.

Item 9.01. Financial Statements and Exhibits

Exhibit No. Description of Exhibit

99.1 Press Release dated August 9, 2012.

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