| http://www.w3.org/ns/prov#value | - For example, the acetone comprises between 1 and 100% of the first solvent and PEG is the preferred second stock solvent; as an alternative, acetone comprises between 95 and 100% of the first solvent and a protonating agent, such as an acid or an alcohol, comprises between 0 and 5% of the first solvent.
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