| http://www.w3.org/ns/prov#value | - hite; inorganic bases and/or salts, such as calcium sulfate, magnesium hydroxide, sodium silicate, and/or sodium bisulfite; sulfur compounds such as polysulfides and/or thiourea; polymeric cyclic ethers such as calixarenes, crown ethers, monensin, nonactin, and/or polymeric epoxides; cyclic and acyclic carbonates; organometallics (e.g., naphthenate and manganese acetylacetonate); phase transfer ca
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