Form of First Amendment To Change In Control (tier Ii) Agreement

Exhibit 10.6(d)

FORM OF FIRST AMENDMENT TO TIER II AGREEMENT

THIS FIRST AMENDMENT TO TIER II AGREEMENT , between Arch Chemicals, Inc., a Virginia corporation (" Company" ), and (the " Employee" ), dated December 30, 2007. WHEREAS, the Employee and the Company have entered into an Tier II Agreement dated , 200 (" Tier II Agreement" ), regarding a change in control; WHEREAS, the Tier II Agreement expires on December 31, 2007, and unless the Compensation Committee (the " Committee" ) of the Board of Directors of Company acts otherwise, it will be extended as provided in Paragraph 2(d) of the Tier II Agreement;

WHEREAS, the Committee is willing to permit the extension of the Tier II Agreement as provided in Paragraph 2(d) of the Tier II Agreement if this Amendment is entered into prior to December 31, 2007 by the Employee; WHEREAS, the Employee is agreeable to entering into this Amendment and agrees the Tier II Agreement shall be renewed for an additional year all in accordance with Paragraph 2(d) ...