| http://www.w3.org/ns/prov#value | - Useful polar solvents include organic solvents having at least one hydroxyl and/or at least one ketone group, i.e., alcohol or ketone solvents, such as methanol, ethanol, butanol, diacetone alcohol, diethylene glycol, butylcarbitol, isophorone, and cyclohexanone.
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