Pengaruh Mol K3Fe(CN)6 pada Sintesis Zat Warna Biru Prusia berbahan Pasir Besi Muara Pantai Sunur Pariaman

— The purpose of the research was to see how different moles of K 3 Fe(CN) 6 affected the color of Prussian blue in order to find the best synthesis conditions. Methods for separating pigments from solvents include coprecipitation and centrifugation. Prussian Blue was created by reacting Fe 3 O 4 with 96% H 2 SO 4 to produce Fe 2+ ions, which were then reacted with K 3 Fe(CN) 6 to produce Prussian Blue. The variation results were referred to as M1, M2, and M3 in this study, which varied three samples of K 3 Fe(CN) 6 . 3.037 mmol K 3 Fe(CN) 6 was reacted at 30.37 mM in sample M1. Sample M2 was made by reacting 9.87 mmol K 3 Fe(CN) 6 30.37 mM with 4.56 mmol FeSO 4 0.018 mM 250 mL. Sample M3 reacted with 12.21 mmol K 3 Fe(CN) 6 at a concentration of 30.37 mM. The M2 sample is the best in terms of K 3 Fe(CN) 6 variation. According to the standard absorbance wavelength of Prussian Blue (680-740 nm), the maximum UV-Vis absorbance of M2 products is at 747 nm, and the absorbance is relatively high.