| http://www.w3.org/ns/prov#value | - Useful liquids include aromatic hydrocarbons such as benzene, toluene, xylene and mesitylene; ketones such as acetone and butanone; halogenated hydrocarbons such as methylene chloride, chloroform and ethylene chloride; ethers including cyclic ethers such as tetrahydrofuran; ethyl ether; and mixtures of the above.
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