| http://www.w3.org/ns/prov#value | - When Y' is a salt-forming cation, it is selected from alkali metals, alkaline earth metals, aluminum, heavy metals, such as copper, silver, nickel and the like, ammonia or a tetrahydrocarbylammonium compound in which the total number of carbon atoms in the hydrocarbyl groups is between 4 and 70 carbon atoms.
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