BETZDEARBORN INC

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

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Certification of termination of registration of a class of securities (Section 12(g))

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

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Beneficial ownership report for a holder of more than 5% (Schedule 13D)

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Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

No description available

General form for quarterly reports under Section 13 or 15(d)

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5,7

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

General form for quarterly reports under Section 13 or 15(d)

Post-effective amendment to a registration statement

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Annual report pursuant to Section 13 or 15(d) (amendment)

Registration of Securities on Exchange

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Definitive Proxy Statement

Registration statement under Securities Act of 1933

Prospectus Supplement for Primary Offering

Annual report pursuant to Section 13 or 15(d)

5,7

Preliminary Proxy Statement

Registration statement under Securities Act of 1933 (amendment)

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Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

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

Registration statement under Securities Act of 1933

Current report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

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

General form for quarterly reports under Section 13 or 15(d)

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

Annual report pursuant to Section 13 or 15(d)

Definitive Proxy Statement

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

General form for quarterly reports under Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d) (amendment)

General form for quarterly reports under Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d)

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

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

General form for quarterly reports under Section 13 or 15(d)

Annual report pursuant to Section 13 or 15(d)

5,7

5

Definitive Proxy Statement

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

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

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

General form for quarterly reports under Section 13 or 15(d)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Annual report pursuant to Section 13 or 15(d)

Definitive Proxy Statement

Preliminary Proxy Statement

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

General form for quarterly reports under Section 13 or 15(d) (amendment)

General form for quarterly reports under Section 13 or 15(d)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

General form for quarterly reports under Section 13 or 15(d)

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)

General form for quarterly reports under Section 13 or 15(d)

Definitive Proxy Statement

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)