Actual results could differ materially from those projected in our forward-looking statements due to numerous unknown and known risks and uncertainties, including among other things the risk factors described in our Form 10-K on file with the SEC. We do not undertake any obligation to publicly update any forward-looking statement to reflect events or circumstances after the date on which any such statements made or to reflect the occurrence of unanticipated events. With that, Seifi?
Thank you, very much, Tim, and good morning to everyone. Thank you for taking time from your busy schedules to join our conference call. As Tim mentioned, during our conference call we will refer to the presentation material we have posted on our website.
I am very pleased to report that Rockwood had another excellent set of results for the first quarter of 2012. we reported an adjusted EBITDA of $234.9 million, our highest ever. We also had a record adjusted EBITDA to sales margin of 25.8%. Our adjusted earnings per share was $1.23, which is 40% higher than the same quarter last year.
These results continue to demonstrate the strength of our portfolio of unique and highly specialized businesses that benefit from having a strong technology and global market position. The efforts of our 10,000 dedicated and motivated employees is also a big factor in our success. Their efforts to improve productivity and enhance customer service allows us to constantly improve our operating margins.
Now, please refer to our presentation material. On page 6, 7, and 8 we have delineated the highlights of our results. But I want to comment in more detail on each business unit. So please turn to page 9. This is the first time we are reporting the results of our Lithium business. We have during the years developed this business to be the flagship of Rockwood with excellent market position and real technology leadership. We have and will continue to strengthen our research and development activities and are investing heavily to expand our operations to meet the increasing demands of our customers.