| http://www.w3.org/ns/prov#value | - Thus, pentane, hexane, in particular n-hexane, heptane, octane, dodecane and isomers thereof, e.g. cyclohexane, methylcyclohexane, and mixtures of aliphatic and cycloaliphatic hydrocarbons, e.g. petroleum ether, aromatic hydrocarbons such as benzene, toluene, xylene and xylene isomers, halogenated hydrocarbons such as dichloromethane, trichloromethane and carbon tetrachloride can advantageously be
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