| http://www.w3.org/ns/prov#value | - s useful in the steps (a) and (b) of the process described above are aromatic hydrocarbons (such as for example benzene, toluene, xylene, etc.), chlorinated hydrocarbons (such as for example, methylene chloride,chloroform, carbon tetrachloride, chlorobenzene etc.), and ethers (such as, for example, ethyl ether, dimethoxyethane, tetrahydrofurane, dioxane, etc.).The bases useful in the step (b) of t
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