Rockwood Press Release

For Immediate Distribution June 15, 2009

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Contact: Timothy McKenna tmckenna@rocksp.com Phone: 609-734-6430

Rockwood Holdings Completes Amendment to Senior Secured Credit Facility

Princeton, NJ USA (June 15, 2009) – Rockwood Holdings, Inc. (NYSE:ROC) today announced that it has completed a major amendment to its senior secured credit facility, including changing the definition of the leverage covenant.

The company said that the leverage covenant test will be modified from the current ratio of net debt over adjusted EBITDA of 4.25 to a new ratio of net senior secured debt over adjusted EBITDA of 4.40. The new limit will decline to 4.00 at the end of 2010.

The amendment also extends the maturity of $1.22 billion of its outstanding terms loans from 2012 until 2014. The company has agreed to a modification of rates in-line with current market conditions for both the extended and non-extended portion of the term loans.

Further details are available in the company’s 8-K to be filed with the Securities and Exchange Commission.

Commenting on the changes, Seifi Ghasemi, chairman and chief executive officer, said, “This amendment will strengthen our balance sheet and extend the maturity of most of our senior secured debt. This will also allow us to continue to pursue our stated long-term strategy for Rockwood as we move forward.”

Rockwood Holdings, Inc. is a leading global specialty chemicals and advanced materials company. Rockwood has a worldwide employee base of approximately 10,000 people and annual net sales of approximately $3 billion. The company focuses on global niche segments of the specialty chemicals, pigments and additives and advanced materials markets. For more information on Rockwood, please visit www.rocksp.com.

The information set forth in this press release contains certain "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 concerning the business, operations and financial condition of Rockwood Holdings, Inc. and its subsidiaries and affiliates ("Rockwood"). Words such as "anticipates," "believes," "estimates," "expects," "forecasts," "predicts" and variations of such words or expressions are intended to identify forward-looking statements. Although Rockwood believes the expectations reflected in such forward-looking statements are based upon reasonable assumptions, there can be no assurance that its expectations will be realized. "Forward-looking statements" consist of all non-historical information, including any statements referring to the prospects and future performance of Rockwood. Actual results could differ materially from those projected in Rockwood's forward-looking statements due to numerous known and unknown risks and uncertainties, including, among other things, the "Risk Factors" described in Rockwood's 2008 Form 10-K on file with the Securities and Exchange Commission. Rockwood does not undertake any obligation to publicly update any forward-looking statement to reflect events or circumstances after the date on which any such statement is made or to reflect the occurrence of unanticipated events.