Arch Chemicals Closes on Remaining $125 Million Private Placement of 4% Senior Notes

Arch Chemicals, Inc. ARJ announced that on December 30, 2010 it issued the remaining $125 million principal amount of notes under its agreement with certain institutional investors providing for a private placement of a total of $250 million aggregate principal amount of 4.0% unsecured senior notes due December 31, 2017. Proceeds from the issuance of these notes will be used for general corporate purposes. The Company issued the first $125 million principal amount of notes on September 9, 2010.