Method for decoloring and purifying azoxystrobin

2014 
The invention relates to a method for decoloring and purifying azoxystrobin. The method comprises the following steps: (1) completely dissolving a crude azoxystrobin product in ethyl acetate at a normal temperature, feeding activated carbon, stirring for 1-2 hours, filtering and keeping filtrate; and (2) adding n-hexane into the filtrate obtained in the step (1), stirring and crystallizing for more than 1.5 hours at 0-5 DEG C, filtering, and baking to obtain an azoxystrobin finished product. The method is performed at normal temperature or low temperature, has low energy consumption, and is convenient to operate; the yield is over 80 percent; the prepared azoxystrobin finished product is white, the content can be increased to over 99 percent, and the quality is high.
    • Correction
    • Source
    • Cite
    • Save
    • Machine Reading By IdeaReader
    0
    References
    0
    Citations
    NaN
    KQI
    []