Method for detecting content of Sc in scandium fluoride

The invention discloses a method for detecting the content of Sc in scandium fluoride, which comprises the following steps: S1, sufficiently and uniformly mixing scandium fluoride and a strong alkali solution, and heating to completely precipitate scandium hydroxide; s2, filtering the scandium hydroxide precipitate, discarding filtrate, and washing the scandium hydroxide precipitate with water until no fluorine ions exist in water washing liquid; s3, adding hydrochloric acid into the scandium hydroxide precipitate washed in S2, heating and dissolving, and reacting the hydrochloric acid with scandium hydroxide to generate a scandium chloride solution; s4, cooling to room temperature, transferring into a volumetric flask, and uniformly mixing; and S5, separately taking the sample, adjusting the pH value to 1.5-1.8, dropwise adding a xylenol orange indicator, titrating with an EDTA-2Na standard solution until the solution is luminous yellow, and calculating the content of scandium in scandium fluoride according