Exhibit 23 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (No. 33-54158) of Quaker Chemical Corporation of our report dated June 26, 2000 relating to the financial statements of the Profit Sharing and Retirement Savings Plan of Quaker Chemical Corporation, which appears in this Form 11-K. /s/ PricewaterhouseCoopers LLP Philadelphia, PA June 28, 2000 13