Firdhausya TF, Zetra Y, Burhan RYP, Putri RB, Firdausa YA. OPTIMIZATION OF REACTION TIME IN THE TRANSESTERIFICATION OF DISTILLED-WATER-WASHED USED COOKING OIL INTO FATTY ACID METHYL ESTERS. Walisongo J. Chem. [Internet]. 2026 Jul. 20 [cited 2026 Jul. 28];9(1):148-5. Available from: https://journal.walisongo.ac.id/index.php/wjc/article/view/31966