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 registrant's press release dated April 19, 2012 announcing that senior management will be available for one-on-one meetings with investors in New York City at the Barclays Capital Chemical Conference on May 3, 2012, the Wells Fargo Securities Industrial and Construction Conference on May 8, 2012 and the Oppenheimer Industrials Conference on May 15, 2012. Senior management will make formal presentations at the Wells Fargo Securities conference at 9:00 a.m. Eastern time and at the Oppenheimer conference at 8:40 a.m. Eastern time.

Copies of the presentation slides for each of these conferences will be available the evening prior to the event to all investors, news media and the general public on Olin's web site www.olin.com in the Investors section under Investor Presentations.

Item 9.01. Financial Statements and Exhibits.

Exhibit No. Exhibit
99.1 Press Release dated April 19, 2012

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