prov:value
| - Specific examples of such second organic solvents include hydrocarbons such as hexane, octane, petroleum ether, cyclohexane, benzene, toluene and xylene; halogenated hydrocarbons such as carbon tetrachloride, trichloroethylene, and tetrabromoethane; ethers such as ethyl ether, dimethyl glycol, trioxane, and tetrahydrofuran; acetals such as methylal and diethyl acetal; ketones such as acetone, meth
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