| http://www.w3.org/ns/prov#value | - crystals by cooling.Examples of the inactive organic medium useful for conducting the above-described isolation are an aromatic hydrocarbon such as benzene, toluene and xylene; a halogenated aliphatic hydrocarbon such as carbon tetrachloride, ethylene dichloride,trichloroethane and tetrachloroethane; an aliphatic petroleum naphtha such as ligroin, petroleum ether, benzine.These chlorinated 4-methy
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