EXTRACTION AGENT FOR RARE EARTH METAL OR IRON

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PROBLEM TO BE SOLVED : To provide an extraction agent that can separate and extract scandium and other rare earth metals conveniently and efficiently. SOLUTION : An extraction agent contains alkylated sarcosine represented by formula I (where R1 is C6-C18 alkyl group). SELECTED DRAWING : Figure 1 COPYRIGHT : (C)2022, JPO&INPIT