Sodium Chlorate Price Increase

Oklahoma City, May 20, 2011 – Tronox Incorporated on behalf of its subsidiary companies, today announced a price increase of $60 per ton for sodium chlorate, effective immediately. The price increase applies to list prices or as contracts allow. This pricing action is driven by continued increases in manufacturing costs from rising energy prices and other key cost drivers in the production of sodium chlorate.

Tronox produces sodium chlorate at its facility in Hamilton, Mississippi. It is used primarily by the pulp and paper industries in an environmentally preferred pulp bleaching process.

Headquartered in Oklahoma City, Tronox is one of the five largest producers and marketers of titanium dioxide pigment. Titanium dioxide pigment is an inorganic white pigment used in paint, coatings, plastics, paper and many other everyday products. The company’s pigment plants, which are located in the United States, Australia and the Netherlands, supply high-performance products to approximately 1,100 customers in 100 countries. In addition, Tronox produces electrolytic products, including sodium chlorate, electrolytic manganese dioxide, boron trichloride, elemental boron and lithium manganese oxide. For information on Tronox, visit https://www.tronox.com.

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Forward-Looking Statements: Some information in this news release regarding the company’s or management’s intentions, beliefs or expectations, or that otherwise speak to future events, are “forward-looking statements” within the meaning of Section 27A of the Securities Exchange Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements include those statements preceded by, followed by or that otherwise include the words “believes,” “will,” “expects,” “anticipates,” “intends,” “estimates,” “projects,” “target,” “budget,” “goal,” “plans,” “objective,” “outlook,” “should,” or similar words. Future results and developments discussed in these statements may be affected by numerous factors and risks, such as the accuracy of the assumptions that underlie the statements, the market value of Tronox’s products, demand for consumer products for which Tronox’s businesses supply raw materials, the financial resources of competitors, the market for debt and/or equity financing, changes in laws and regulations, the ability to respond to challenges in international markets, changes in currency exchange rates, political or economic conditions in areas where Tronox operates, trade and regulatory matters, general economic conditions, and other factors and risks identified in the Risk Factors Section of Tronox’s Annual Report on Form 10-K for the year ended December 31, 2007, and subsequent Quarterly Reports on Form 10-Q, as filed with the U.S. Securities and Exchange Commission (SEC), and other SEC filings. Actual results and developments may differ materially from those expressed or implied in this news release. The company does not undertake to update forward-looking statements to reflect the impact of circumstances or events that arise after the date the forward-looking statement was made. Investors are urged to consider closely the disclosures and risk factors in Tronox’s Annual Report on Form 10-K for the year ended December 31, 2007, available on Tronox’s website, https://www.tronox.com. This also can be obtained from the SEC by calling 1-800-SEC-0330.

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