UNITED STATES

OMB APPROVAL

SECURITIES AND EXCHANGE COMMISSION

OMB Number: 3235-0145

Washington, D.C. 20549

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Cytec Industries Inc.

(Name of Issuer)

Common stock, par value $0.01 per share

(Title of Class of Securities)

232820 10 0

(CUSIP Number)

March 6, 2007

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

     o Rule 13d-1(b)

     x Rule 13d-1(c)

     oRule 13d-1(d)

^*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

Page 1 of 5 pages

CUSIP No.            232820 10 0

1

Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).

UCB S.A.

2

Check the Appropriate Box if a Member of a Group (See Instructions)                                                                               
(a) x
(b) o

3

SEC Use Only

4

Citizenship or Place of Organization                                                                                                                           Belgium

Number of Shares Beneficially Owned by Each Reporting Person With:

5

Sole Voting Power                                                                                                     962,143

6

Shared Voting Power                                                                                                           0

7

Sole Dispositive Power                                                                                              962,143

8

Shared Dispositive Power                                                                                                   0

9

Aggregate Amount Beneficially Owned by Each Reporting Person                                                                       962,143

10

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)                                            o

11

Percent of Class Represented by Amount in Row (9)                                                                                                  2.01%

12

Type of Reporting Person (See Instructions)                                                                                                                    CO

Page 2 of 5 pages

CUSIP No.            232820 10 0

Item 1.

(a)

Name of Issuer:

Cytec Industries Inc. (the “Issuer”)

(b)

Address of Issuer’s Principal Executive Offices:

Five Garret Mountain Plaza

Water Paterson, NJ 07424

Item 2.

(a)

Names of Persons Filing:

UCB S.A., a Belgian societe anonyme

(b)

Addresses of Principal Business Offices:

Allee de la Recherche 60

Brussels, Belgium, 1070

(c)

Citizenship:

Belgium

(d)

Title of Class of Securities:

Common stock, par value $0.01 per share

(e)

CUSIP Number:

232820 10 0

Item 3.

If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a(n):

(a)

Broker or dealer registered under Section 15 of the Act;

(b)

Bank as defined in Section 3(a)(6) of the Act;

(c)

Insurance company as defined in Section 3(a)(19) of the Act;

(d)

Investment company registered under Section 8 of the Investment Company Act of 1940;

(e)

Investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);

(f)

Employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F);

(g)

Parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G);

(h)

Savings association as defined in Section 3(b) of the Federal Deposit Insurance Act;

Page 3 of 5 pages

CUSIP No.            232820 10 0

(i)

Church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940; or

(j)

Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

Item 4.

Ownership.

(a)

Amount Beneficially Owned: 962,143

(b)

Percent of class: 2.01%

(c)

Number of shares as to which the person has

(i) Sole power to vote or to direct the vote: 962,143

(ii) Shared power to vote or to direct the vote: 0

(iii) Sole power to dispose or to direct the disposition of: 962,143

(iv) Shared power to dispose or direct the disposition of: 0

Item 5.

Ownership of Five Percent or Less of a Class.

Item 6.

Ownership of More than Five Percent on Behalf of Another Person.

Not applicable.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company.

Not applicable.

Item 8.

Identification and Classification of Members of the Group.

Not applicable.

Item 9.

Notice of Dissolution of Group.

Not applicable.

Item 10.

Certifications.

Not applicable.

Page 4 of 5 pages

CUSIP No.            232820 10 0

Page 5 of 5 pages