| http://www.w3.org/ns/prov#value | - Examples of such additives include pigments, such as mica, barytes, and titanium oxide; a potassium, sodium or ammonium salt of a condensed phosphoric acid, e.g., hexametaphosphoric acid; a sodium or ammonium salt of polyacrylic acid; general anionic or nonionic surface active agents; thickeners, such as methyl cellulose, ethyl cellulose, propyl cellulose, carboxymethyl cellulose, and polyvinyl al
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