Olin Announces Pricing Terms of Debt Offering

CLAYTON, MO--(Marketwire - August 14, 2009) - Olin Corporation (NYSE: OLN) announced today
the pricing of its offering of $150 million 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.

Olin has filed a registration statement on Form S-3 (including a
prospectus) with the Securities and Exchange Commission for the offering to
which this communication relates. Before you invest, you should read the
prospectus in that registration statement and the supplement thereto and
the other documents that Olin has filed with the SEC for more complete
information about Olin and this offering. These documents are available at
no charge by visiting EDGAR on the SEC website at www.sec.gov.
Alternatively, these documents will be made available upon request to any
underwriter participating in the offering. Interested parties may obtain a
prospectus from Citigroup Global Markets Inc. by directing a request to
Citigroup Global Markets Inc. at Brooklyn Army Terminal, 140 58th Street,
8th Floor, Brooklyn, NY 11220 or by calling 718-765-6732; or from Banc of
America Securities LLC by directing a request to Banc of America Securities
LLC, Prospectus Department, 100 West 33rd Street, 3rd Floor, New York, NY
10001 or by emailing a request to
dg.prospectus_distribution@bofasecurities.com; or from Wells Fargo
Securities, LLC, 301 South College Street, 6th Floor, Charlotte, NC 28202,
Attention: High Yield Syndicate or by calling 704-715-7035.

COMPANY DESCRIPTION

Olin Corporation is a manufacturer concentrated in two business segments:
Chlor Alkali Products and Winchester. Chlor Alkali Products manufactures
chlorine and caustic soda, sodium hydrosulfite, hydrochloric acid,
hydrogen, potassium hydroxide and bleach products. Winchester products
include sporting ammunition, reloading components, small caliber military
ammunition and components, and industrial cartridges.

Click here for more information on Olin.

This press release does not constitute an offer to sell or the solicitation
of an offer to buy the Senior Notes, which may be made only pursuant to the
terms of the relevant prospectus supplement (including the prospectus).

CAUTIONARY STATEMENT ABOUT FORWARD-LOOKING STATEMENTS:

This report includes forward-looking statements. These statements relate to
analyses and other information based on management's beliefs, certain
assumptions made by management, forecasts of future results and current
expectations, estimates and projections about our operations and the
markets and economy in which we and our various segments operate. The
statements contained in this report that are not statements of historical
fact may include forward-looking statements that involve a number of risks
and uncertainties.

We have used the words "intend," "expect," and variations of such words and
similar expressions in this report to identify such forward-looking
statements. These statements are not guarantees of future performance and
involve certain risks, uncertainties and assumptions, which are difficult
to predict and many of which are beyond our control. We undertake no
obligation to update publicly any forward-looking statements, whether as a
result of future events, new information or otherwise.

You should consider these forward-looking statements in light of risk
factors discussed in the preliminary Prospectus Supplement filed with the
Securities and Exchange Commission on August 13, 2009 and in the final
Prospectus Supplement to be filed with the Securities and Exchange
Commission and those in our annual report on Form 10-K for the year ended
December 31, 2008, and subsequent periodic filings made with the Securities
and Exchange Commission. In addition, other risks and uncertainties not
presently known to us or that we consider immaterial could affect the
accuracy of our forward-looking statements.

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