ARCH CHEMICALS INC

Q: Jun 30 2011

Q: Mar 31 2011

FY: Dec 31 2010

Q: Sep 30 2010

Q: Jun 30 2010

Q: Mar 31 2010

FY: Dec 31 2009

Q: Sep 30 2009

Q: Jun 30 2009

Q: Mar 31 2009

FY: Dec 31 2008

Q: Sep 30 2008

Q: Jun 30 2008

Q: Mar 31 2008

FY: Dec 31 2007

Q: Sep 30 2007

Q: Jun 30 2007

Q: Mar 31 2007

FY: Dec 31 2006

Q: Sep 30 2006

1.02,2.01,2.04,3.01,3.03,5.01,5.02,5.03,9.01

5.02

5.07

2.02,9.01

1.01,8.01,9.01

1.01,1.02,2.03,8.01,9.01

5.07

Results of Operations and Financial Condition

2.02,9.01

1.01,9.01

1.01,9.01

1.01,9.01

2.03,8.01,9.01

5.02

7.01,9.01

Other Events

2.02,9.01

1.01,9.01

1.01,2.03,7.01,9.01

2.05,2.06

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Notification of removal from listing and/or registration on a national securities exchange

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Post Effective Amendment to S-8

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

PRICE T ROWE ASSOCIATES INC /MD/

DeMasi Meghan Elizabeth

Walden Rick L.

GIULIANO STEVEN C

OCONNOR SARAH A

Sandonato W. Anthony

BUSH W PAUL

FERNANDEZ LUIS M

Cook Michael A

CAMPBELL MICHAEL E

SHAULSON JOSEPH H

LG Acquisition Parent Corp.

LG Acquisition Parent Corp.

ARCH CHEMICALS INC

LG Acquisition Corp.

GAMCO INVESTORS, INC. ET AL

LILLEY DAVID

CAVANAGH RICHARD

CAMPBELL MICHAEL E

SANDERS DANIEL S

No description available

No description available

No description available

No description available

No description available

No description available

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual Report Scanned (Paper)

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual Report Scanned (Paper)

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d) (amendment)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)