Rockwood Press Release

Rockwood Specialties Group, Inc. Announces Third Quarter 2004 Conference Call and Webcast

Princeton, NJ USA (November 10, 2004) - Rockwood Specialties Group, Inc., a global producer of specialty chemicals and advanced performance materials, announced it will host a live conference call and webcast to discuss its third quarter results of operations for the period ended September 30, 2004 on Wednesday, November 17, 2004 at 11:00 a.m. eastern time. The dial-in number to access the live conference call in the U.S. is (888) 428-4471 and the international dial-in number is (651) 291-0900, no access code is needed for either call.

A PowerPoint file is available here detailing the results. Download the PowerPoint file (140k)

To access a listen-only, live webcast of the conference call please click here.

A replay of the conference call will be available through November 24, 2004 at (800) 475-6701 in the U.S., access code: 755344, and internationally at (320) 365-3844, access code: 755344. The webcast also will be archived on our website.

Rockwood Specialties Group, Inc. is a leading global specialty chemicals and advanced performance materials company. Rockwood has a worldwide employee base of approximately 9,700 people and revenue of approximately $2.4 billion in 2003 on a pro forma basis, including the Dynamit Nobel businesses. The company focuses on global niche segments of the specialty chemicals and advanced performance materials markets, including specialty chemicals, performance additives, pigments, advanced ceramics, custom synthesis, specialty compounds and electronics.

The information discussed in the conference call will contain 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 Specialties Group, Inc. and its subsidiaries ("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 the statements referring to the prospects and future performance of Rockwood or the four businesses of Dynamit Nobel that Rockwood has acquired. 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 2003 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.