| 摘要 |
Contaminants are removed from MAPO by dissolving impure MAPO in a solvent selected from benzene, chloroform, or mixtures of chloroform and carbon tetrachloride, extracting a portion of the MAPO from the solvent with water, extracting a portion of the MAPO from water with methylene chloride, and removing the methylene chloride from the MAPO.
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