| http://www.w3.org/ns/prov#value | - As the organic solvent, preferred is usually a water-soluble one, and examples thereof include lower alcohols such as methanol, ethanol, propanol, isopropanol, butanol, isobutanol, sec-butanol and t-butanol; various esters such as methyl formate, ethyl formate, methyl acetate, ethyl acetate and isopropyl acetate; various ketones such as acetone, 2-butanone and 3-methyl-2-butanone; cyclic ethers su
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