Synthesis and Extractive Property Evaluation of 1-phenyl-3-methyl-4-caprylpyrazolone-5

1-phenyl-3-methyl-4-caprylpyrazolone-5（PMCyP） was synthesized from 1-phenyl-3-methyl-pyrazolone-5 （PMP） and caprylyl chloride, and some extraction parameters were investigated such as the acidity, the concentration of Sr, the time of the extraction and the thinners. 5 g/L PMCyP-MIBK, pH=9.0 and 1 min of extraction are testified the best condition. The final solution of Sr is stored in 0.1 mol/L hydrochloric acid. Strontium and yttrium can be separated by changing the acidity, and it can be used to separate the radioactive Sr from matrix. The saturation of 10 mL 1 g/L PMCyP-MIBK is about 1 mg, and the stoichiometric proportion to Sr is 3∶1 in extraction.