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EXHIBIT 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350

The undersigned hereby certifies that the Form 10-Q Quarterly Report of Quaker Chemical Corporation (the “Company”) for the

quarterly period ended March 31, 2021 filed with the Securities and Exchange Commission (the “Report”) fully complies with the

requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in the Report fairly

presents, in all material respects, the financial condition and results of operations of the Company.

Dated: May 6, 2021 

/s/ Michael F. Barry

Michael F. Barry

Chief Executive Officer of Quaker Chemical Corporation