Exhibit 10.52

SHORT-TERM INCENTIVE PLAN
FOR ROCKWOOD HOLDINGS, INC. AND SUBSIDIARIES

1.             Purpose of the Plan

The purpose of the Plan is to enable the Company and its Subsidiaries to attract, retain, motivate and reward executive officers and key employees by providing them with the opportunity to earn competitive compensation directly linked to the Company’s performance.

2.             Definitions

The following capitalized terms used in the Plan have the respective meanings set forth in this Section:

(a)           “Board” shall mean the Board of Directors of the Company.

(b)           “Code” shall mean the Internal Revenue Code of 1986, as amended, or any successor thereto.

(c)           “Committee” shall mean the Compensation Committee of the Board (or such other committee or subcommittee thereof as the Board may designate).

(d)           “Company” shall mean Rockwood Holdings, Inc., a Delaware corporation.

(e)           “Covered Employee” shall have the meaning set forth in Section 162(m) of the Code.

(f)            “Participant” shall mean each executive officer of the Company and other key employee of the Company or a Subsidiary whom the Committee designates as a participant under the Plan.

(g)           “Performance Period” shall mean each fiscal year or multi-year cycle as determined by the Committee.

(h)           “Plan” shall mean the Rockwood Holdings, Inc. Short-Term Incentive Plan, as set forth herein and as may be amended from time to time.

(i)            “Share” shall mean a share of common stock of the Company.

(j)            “Subsidiary” shall mean a subsidiary corporation, as defined in Section 424(f) of the Code (or any successor section thereto).

3.             Administration

The Plan shall be administered and interpreted by the Committee; provided, however, that the Board may, in its sole discretion, take any action designated to the Committee under this Plan as it may deem necessary; provided that, to the extent Section 162(m) of the Code is applicable to the Company and the Plan, in no event shall the Plan be administered or interpreted in a manner which would cause any award intended to be qualified as “performance-based

compensation” under Section 162(m) of the Code to fail to so qualify. Any determination made by the Committee under the Plan shall be final and conclusive. The Committee may employ such legal counsel, consultants and agents (including counsel or agents who are employees of the Company or a Subsidiary) as it may deem desirable for the administration of the Plan and may rely upon any opinion received from any such counsel or consultant or agent and any computation received from such consultant or agent. All expenses incurred in the administration of the Plan, including, without limitation, for the engagement of any counsel, consultant or agent, shall be paid by the Company. No member or former member of the Board or the Committee shall be liable for any act, omission, interpretation, construction or determination made in connection with the Plan other than as a result of such individual’s willful misconduct. The Committee may delegate its authority under this Plan; provided that, to the extent Section 162(m) of the Code is applicable to the Company and the Plan, the Committee shall in no event delegate its authority with respect to the compensation of the Chief Executive Officer of the Company, the four most highly compensated executive officers (as determined under Section 162(m) of the Code and regulations thereunder) of the Company or any other individual whose compensation the Board or Committee reasonably believes may become subject to Section 162(m) of the Code.

4.             Bonuses

(a)           Performance Criteria. No later than 90 days after each Performance Period begins (or such other date as may be required or permitted under Section 162(m) of the Code to the extent applicable to the Company and the Plan), the Committee shall establish the performance objective or objectives that must be satisfied in order for a Participant to receive a bonus for each such Performance Period. Notwithstanding the foregoing, with respect to the Performance Period during which the Effective Date (as defined in Section 6(a)) occurs, the Committee shall establish the performance objective or objectives that must be satisfied in order for a Participant to receive a bonus for such Performance Period by no later than 60 days after the Effective Date. Any such performance objectives will be based upon the relative or comparative achievement of one or more of the following criteria, as determined by the Committee: (i) earnings before or after taxes (including earnings before interest, taxes, depreciation and amortization or as otherwise calculated under Rockwood Specialties Group, Inc.’s senior secured credit agreement (as may be amended or refinanced from time to time)); (ii) net income; (iii) operating income; (iv) earnings per Share; (v) book value per Share; (vi) return on stockholders’ equity; (vii) expense management; (viii) return on investment; (ix) improvements in capital structure; (x) profitability of an identifiable business unit or product; (xi) maintenance or improvement of profit margins; (xii) stock price; (xiii) market share; (xiv) revenues or sales; (xv) costs; (xvi) cash flow; (xvii) working capital; (xviii) return on assets; (xix) assets under management; and (xx) total return. The foregoing criteria may relate to the Company, one or more of its Subsidiaries or one or more of its divisions or units, or any combination of the foregoing, and may be applied on an absolute basis and/or be relative to one or more peer group companies or indices, or any combination thereof, all as the Committee shall determine.

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(b)           Target Incentive Bonuses. No later than 90 days after each Performance Period begins (or such other date as may be required or permitted under Section 162(m) of the Code to the extent applicable to the Company and the Plan), the Committee shall establish target incentive bonuses for each individual Participant will be eligible to earn in respect of such Performance Period upon the achievement of the performance objective or objectives established for such Performance Period. Notwithstanding the foregoing, with respect to the Performance Period during which the Effective Date occurs, the Committee shall, to the extent not already established, establish target incentive bonuses for each individual Participant by no later than 60 days after the Effective Date.

(c)           Maximum Amount Payable. As soon as practicable after the Performance Period ends but in no event later than the date that is 75 days after the end of the taxable year in respect of which the applicable bonuses are payable, the Committee shall determine (i) whether and to what extent any of the performance objectives established for the relevant Performance Period under Section 4(a) have been satisfied and (ii) for each Participant who is employed by the Company or one of its Subsidiaries on the last day of the Performance Period for which the bonus is payable, the actual bonus to which such Participant shall be entitled, taking into consideration the extent to which the performance objectives have been met and such other factors as the Committee may deem appropriate. Any provision of this Plan notwithstanding, in no event shall any Participant receive a bonus under this Plan in respect of any fiscal year of the Company in excess of $10 million.

(d)           Negative Discretion. Notwithstanding anything else contained in Section 4(c) to the contrary, the Committee shall have the right, in its absolute discretion, (i) to reduce or eliminate the amount otherwise payable to any Participant under Section 4(c) based on individual performance or any other factors that the Committee, in its discretion, shall deem appropriate and (ii) to establish rules or procedures that have the effect of limiting the amount payable to each Participant to an amount that is less than the maximum amount otherwise authorized under Section 4(c).

(e)           Death or Disability. If a Participant dies or becomes disabled prior to the last day of the Performance Period for which the bonus is payable, such Participant may receive an annual bonus equal to the bonus otherwise payable to such Participant based upon actual Company performance for the applicable Performance Period or, if determined by the Committee, based upon achieving targeted performance objectives, multiplied by a fraction, the numerator of which is the number of days that have elapsed during the Performance Period in which the Participant’s death or disability occurs prior to and including the date of the Participant’s death or disability and the denominator of which is the total number of days in the Performance Period or such other amount as the Committee may deem appropriate.

(f)            Other Termination of Employment. Unless otherwise determined by the Committee and except as may otherwise be provided in Section 4(e) above, no

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bonuses shall be payable under this Plan to any Participant whose employment terminates prior to the last day of the Performance Period.

5.             Payment

(a)           In General. Except as otherwise provided hereunder, payment of any bonus amount determined under Section 4 shall be made to each Participant as soon as practicable after the Committee certifies that one or more of the applicable performance objectives have been attained or, in the case of any bonus payable under the provisions of Section 4(d), after the Committee determines the amount of any such bonus.

(b)           Form of Payment. The Committee shall determine whether any bonus payable under this Plan is payable in cash, or in restricted stock, restricted stock units, stock appreciation rights or options (of equivalent value) awarded under the 2005 Amended and Restated Stock Purchase and Option Plan for Rockwood Holdings, Inc. and Subsidiaries (as amended from time to time), or any combination thereof.

6.             General Provisions

(a)           Effectiveness of the Plan. The Plan shall become effective on the date on which it is adopted by the Board (the “Effective Date”), subject to the approval of the stockholders of the Company. The Plan shall expire on the tenth anniversary of the Effective Date.

(b)           Code Section 162(m) Compliance. Notwithstanding anything set forth in this Plan to the contrary, until such time as the Company is no longer within the “reliance period” (as such term is defined in Treasury Regulation 1.162-27(f)(2)) (the “Reliance Period”), the Board or the Committee may, but is not required, to administer and maintain this Plan, and grant target incentive bonuses, and pay bonuses, under this Plan, to those employees who are Covered Employees in compliance with the provisions of Section 162(m) of the Code as the same would apply upon expiration of the Reliance Period.

(c)           Amendment and Termination. The Board or the Committee may at any time amend, suspend, discontinue or terminate the Plan; provided, however, that no such amendment, suspension, discontinuance or termination shall adversely affect the rights of any Participant in respect of any calendar year which has already commenced and, to the extent Section 162(m) of the Code is applicable to the Company and the Plan, no such action shall be effective without approval by the stockholders of the Company to the extent necessary to continue to qualify the amounts payable hereunder to Covered Employees as under Section 162(m) of the Code.

(d)           Designation of Beneficiary. Each Participant may designate a beneficiary or beneficiaries (which beneficiary may be an entity other than a natural Person) to receive any payments which may be made following the Participant’s death. Such designation may be changed or canceled at any time without the consent of any

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such beneficiary. Any such designation, change or cancellation must be made in a form approved by the Committee and shall not be effective until received by the Committee. If no beneficiary has been named, or the designated beneficiary or beneficiaries shall have predeceased the Participant, the beneficiary shall be the Participant’s spouse or, if no spouse survives the Participant, the Participant’s estate. If a Participant designates more than one beneficiary, the rights of such beneficiaries shall be payable in equal shares, unless the Participant has designated otherwise.

(e)           No Right to Continued Employment or Awards. Nothing in this Plan shall be construed as conferring upon any Participant any right to continue in the employment of the Company or any of its Subsidiaries. No Participant shall have any claim to be granted any award, and there is no obligation for uniformity of treatment of Participants or beneficiaries. The terms and conditions of awards and the Committee’s determinations and interpretations with respect thereto need not be the same with respect to each Participant (whether or not the Participants are similarly situated).

(f)            No Limitation on Corporate Actions. Nothing contained in the Plan shall be construed to prevent the Company or any Subsidiary from taking any corporate action which is deemed by it to be appropriate or in its best interest, whether or not such action would have an adverse effect on any awards made under the Plan. No employee, beneficiary or other person shall have any claim against the Company or any Subsidiary as a result of any such action.

(g)           Nonalienation of Benefits. Except as expressly provided herein, no Participant or beneficiary shall have the power or right to transfer, anticipate, or otherwise encumber the Participant’s interest under the Plan. The Company’s obligations under this Plan are not assignable or transferable except to (i) a corporation which acquires all or substantially all of the Company’s assets or (ii) any corporation into which the Company may be merged or consolidated. The provisions of the Plan shall inure to the benefit of each Participant and the Participant’s beneficiaries, heirs, executors, administrators or successors in interest.

(h)           Withholding. A Participant may be required to pay to the Company or any Subsidiary and the Company or any Subsidiary shall have the right and is hereby authorized to withhold from any payment due under this Plan or from any compensation or other amount owing to the Participant, applicable withholding taxes with respect to any payment under this Plan and to take such action as may be necessary in the opinion of the Company to satisfy all obligations for the payment of such withholding taxes.

(i)            Severability. If any provision of this Plan is held unenforceable, the remainder of the Plan shall continue in full force and effect without regard to such unenforceable provision and shall be applied as though the unenforceable provision were not contained in the Plan.

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(j)            Governing Law. The Plan shall be governed by and construed in accordance with the laws of the State of New York.

(k)           Headings. Headings are inserted in this Plan for convenience of reference only and are to be ignored in a construction of the provisions of the Plan.

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