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                    SECURITIES AND EXCHANGE COMMISSION
                          Washington, D.C. 20549

                               SCHEDULE 13G/A

                UNDER THE SECURITIES EXCHANGE ACT OF 1934
                           (AMENDMENT NO. 22)*

                       QUAKER CHEMICAL CORPORATION
    ------------------------------------------------------------------
                             (NAME OF ISSUER)

                      COMMON STOCK, $1.00 Par Value
    ------------------------------------------------------------------
                      (TITLE OF CLASS OF SECURITIES)

                               747316 10 7
              ----------------------------------------------
                              (CUSIP NUMBER)


    Check the following box if a fee is being paid with this statement
    (unchecked box). (A fee is not required only if the filing person:
    (1) has a previous statement on file reporting beneficial ownership
    of more than five percent of the class of securities described in
    Item 1; and (2) has filed no amendment subsequent thereto reporting
    beneficial ownership of five percent or less of such class.)
    (See Rule 13d-7.)

    *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).


                       (Continued on following page(s))

                              Page 1 of 5 Pages

CUSIP NO. 747316 10 7 13G PAGE 2 OF 5 PAGES - ----------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Peter A. Benoliel Social Security Number: ###-##-#### - ----------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (A) (unchecked box) Not Applicable (B) (unchecked box) - ----------------------------------------------------------------------------- 3 SEC USE ONLY - ----------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States of America - ----------------------------------------------------------------------------- 5 SOLE VOTING POWER 450,980 --------------------------------------------------------- 6 SHARED VOTING POWER NUMBER OF SHARES 8,000 BENEFICIALLY OWNED BY --------------------------------------------------------- EACH 7 SOLE DISPOSITIVE POWER REPORTING PERSON 450,980 WITH --------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 8,000 - ----------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 458,980 - ----------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* (checked box) - ----------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.2% - ----------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - ----------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT!

Item 1(a). Name of Issuer. --------------- Quaker Chemical Corporation (herein the "Company"). Item 1(b). Address of Issuer's Principal Executive Offices. ------------------------------------------------ The Company's principal executive offices are located at Elm and Lee Streets, Conshohocken, Pennsylvania 19428. Item 2(a). Name of Person Filing. ---------------------- Peter A. Benoliel (herein the "Reporting Person"). Item 2(b). Address of Principal Business Office or, if none, Residence. ------------------------------------------------------------ Quaker Chemical Corporation, Elm and Lee Streets, Conshohocken, Pennsylvania 19428. Item 2(c). Citizenship. ------------ The Reporting Person is a citizen of the United States of America. Item 2(d). Title of Class of Securities. ----------------------------- Common Stock, $1.00 par value. Item 2(e). CUSIP Number. ------------- 747316 10 7. Item 3. Not Captioned. -------------- Not applicable. Page 3 of 5

Item 4. Ownership. ---------- The number of shares of Common Stock of the Company beneficially owned by the Reporting Person on December 31, 2000, was as follows: (a) Amount Beneficially Owned: 458,980 (b) Percent of Class: 5.2% (c) Number of Shares as to which the Reporting Person has: (i) Sole power to vote or to direct the vote: 450,980 (ii) Shared power to vote or to direct the vote: 8,000 (iii) Sole power to dispose or to direct the disposition of: 450,980 (iv) Shared power to dispose or to direct the disposition of: 8,000 (Does not include 415,000 shares under irrevocable trust of which the Reporting Person is the Settlor and income beneficiary, but for which the Reporting Person has no voting or dispositive power.) Item 5. Ownership of Five Percent or Less of a Class. --------------------------------------------- Not applicable. 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. Page 4 of 5

Item 9. Notice of Dissolution of Group. ------------------------------- Not applicable. Item 10. Certification. -------------- Not applicable. After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Date: February 12, 2001 Signature: Peter A. Benoliel Name/Title: Peter A. Benoliel, Executive Committee Chairman Page 5 of 5