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how can delete the impurity in 1-(2:6 dichloro
phenyl)-2-indolenone.and desolving the impurity in which
solvent but does not desolve product in solvent.
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Answer / nisha
dissolving impurity and get pure product is called crystallization .
and if we dissolve the product this requir more amount of solvent this is more costly
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Organic Chemistry 
