Olin Corp

OLN: XNYS (USA)

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Olin Is North America's Largest Low-Cost Chlor-Alkali Producer

Christian Fleming

Jul 31, 2026

Business Strategy and Outlook

Olin serves many end markets, concentrating production around industrial manufacturing, construction, and small-arms ammunition. As the world's largest chlor-alkali producer, it manufactures caustic soda, chlorine, and hydrogen (collectively the electrochemical unit, or ECU). North America is heavily concentrated, with the top five producers controlling over three-fourths of the market; Olin alone accounts for roughly a third.

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Olin Corp

Olin Is North America's Largest Low-Cost Chlor-Alkali Producer

Business Strategy and Outlook

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