The solvent that is best for removing the impurity through hot filtration is petroleum ether. It is an organic solvent.
Petroleum ether is an organic solvent derived from petroleum, i.e., it is a well-known aliphatic hydrocarbon.
Petroleum ether is not a true ether because the word 'ether' makes reference to its extremely high level of volatility.
Moreover, hot filtration is a chemical methodology used for filtering solutions that are able to crystallize when they cool.
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