| http://www.w3.org/ns/prov#value | - Suitable organic and inorganic compounds capable of blocking metals in the present composition include organic compounds such as ethylenediamine tetraacetic acid and salts thereof (EDTA), nitriloacetic acid and salts thereof (NTA), malonic acid and salts thereof, citric acid and salts thereof, DL-aspartic acid and salts thereof, acetylacetone, 8-hydroxyquinoline, o-phenanthroline and the like; and
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